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ART000917220
|
oai_dc
|
Structure of the Double Four-spiral Semigroup
|
Structure of the Double Four-spiral Semigroup
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"V.M.Chandrasekaran(Vellore Institute of Technology)"
] |
In this paper, we first give an alternative description of the fundamental orthodox semigroup A(1;2):We then use this to represent the double four-spiral semigroup DSp4 as a regular Rees matrix semigroup over A(1;2):
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART000917226
|
oai_dc
|
On a Class of Univalent Functions Defined by Ruscheweyh Derivatives
|
On a Class of Univalent Functions Defined by Ruscheweyh Derivatives
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"S. Shams(Fergusson College); S.R.Kulkarni(Fergusson College); Jay M. Jahangiri(Kent State University(U.S.A.))"
] |
A new class of univalent functions is defined by making use of the Ruscheweyh derivatives. We provide necessary and suffi cient coefficient conditions, extreme points,integral representations, distortion bounds, and radius of starlikeness and convexity fort his class.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART000917216
|
oai_dc
|
Pointwise Projective Modules and Some Related Modules
|
Pointwise Projective Modules and Some Related Modules
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Ghasan Naoum-Adil(University of Baghdad); Zaki Jamil-Zeana(University of Baghdad)"
] |
Let R be a commutative ring with 1, and Let M be a (left)R-module. M is said to be pointwise projective if for each epimorphism :A ! B , where A and B are any R modules, and for each homomorphism : M ! B , then for every m 2M , there exists a homomorphism' : M ! A , which may depend on m, such that'(m) = (m). Our mean concern in this paper is to study the relations between pointwise projective modules with cancellation modules and their generalization generator modules, multiplication modules and its generalizations.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART000917217
|
oai_dc
|
Hyers-Ulam-Rassias Stability of Popoviciu's Functional Equation in Banach Modules
|
Hyers-Ulam-Rassias Stability of Popoviciu's Functional Equation in Banach Modules
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Yong-Soo Jung(Seowon University); Jae-HyeongBae(Chungnam National University)"
] |
In this paper we study the Hyers-Ulam-Rassias stability of Popoviciu's functional equation in Banach modules over a Banach algebra.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART000917221
|
oai_dc
|
On (H, μ_{n}) Summability of Fourier Series
|
On (H, μ_{n}) Summability of Fourier Series
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"SatishChandra(S. M. Post-Graduate College)"
] |
수학
| null |
kci_detailed_000037.xml
|
||||
ART000917224
|
oai_dc
|
A Note on Maass-Jacobi Forms
|
A Note on Maass-Jacobi Forms
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Jae-HyunYang(Inha University)"
] |
In this paper, we introduce the notion of Maass-Jacobi forms and investigate some properties of these new automorphic forms. We also characterize these automorphic forms in several ways.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART000917225
|
oai_dc
|
Steinhaus Graphs with Minimum Degree Two
|
Steinhaus Graphs with Minimum Degree Two
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Dongju Kim(Keimyung University); Daekeun Lim(Keimyung University)"
] |
In this paper, we classify the Steinhaus graphs with minimum degree two.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART000917227
|
oai_dc
|
How to Characterize Equalities for the Generalized Inverse A^{(2)}_{T,S} of a Matrix
|
How to Characterize Equalities for the Generalized Inverse A^{(2)}_{T,S} of a Matrix
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Yonghui Liu(Zao Zhuang Normal College)"
] |
In this paper, some rank equalities related to generalized inverses A(2)T;S of a matrix are presented. As applications, a variety of rank equalities related to the M-P inverse, the Drazin inverse, the group inverse, the weighted M-P inverse, the Bott-Dun inverse and the generalized Bott-Dun inverse are established.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802868
|
oai_dc
|
Sequence Space m(M,ϕ)F of Fuzzy Real Numbers Defined by Orlicz Functions with Fuzzy Metric
|
Sequence Space m(M,ϕ)F of Fuzzy Real Numbers Defined by Orlicz Functions with Fuzzy Metric
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Binod Chandra Tripathy(Institute of Advanced Study in Science and Technology); Stuti Borgohain(Institute of Advanced Study in Science and Technology)"
] |
The sequence space m(M,ϕ)F of fuzzy real numbers is introduced. Some properties of this sequence space like solidness, symmetricity, convergence-free etc. are studied. We obtain some inclusion relations involving this sequence space.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802867
|
oai_dc
|
Iterative Algorithm for a New System of Variational Inclusions with B-monotone Operators in Banach Spaces
|
Iterative Algorithm for a New System of Variational Inclusions with B-monotone Operators in Banach Spaces
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"이상근(경상대학교); 정재욱(동의대학교)"
] |
In this paper, we introduce and study a new system of variational inclusions with B-monotone operators in Banach spaces. By using the proximal mapping associated with B- monotone operator, we construct a new iterative algorithm for approximating the solution of this system of variational inclusions. We also prove the existence of solutions and the convergence of the sequences generated by the algorithm for this system of variational inclusions. The results presented in this paper extend and improve some known results in the literature.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802879
|
oai_dc
|
Differential Subordination Properties of Sokol-Stankiewicz Starlike Functions
|
Differential Subordination Properties of Sokol-Stankiewicz Starlike Functions
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Rashidah Omar(University of Malaya); Suzeini Abdul Halim(MARA University of Technology Malaysia)"
] |
Let p(z) be an analytic function defined on the open unit disk D and p(0) = 1.
Condition β in terms of complex numbers D and real E with −1 < E < 1 and |D| ≤ 1is determined such that 1 + βzp0(z) ＜ 1+Dz/1+Ez implies p(z) ＜1 + z. Furthermore, theexpression 1 + βzp'(z)/p(z) and 1 + βzp'(z)/p2(z) are considered in obtaining similar results.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802873
|
oai_dc
|
DNA and the SU(3) Invariant of Knots and Links
|
DNA and the SU(3) Invariant of Knots and Links
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"정명주(한국과학영재학교); 홍대기(경북대학교)"
] |
To analyze the enzyme reaction on DNA knots and links, we study tangle embedding and the number of reaction. By using the quantum SU(3) invariant of knots and links we get a necessary condition for a tangle to be embedded in a knot or link.
Moreover we give a relationship between the number of reactions and the changes of the value of quantum SU(3) invariant for the corresponding knots and links in a processive recombination.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802880
|
oai_dc
|
New Subclasses of Harmonic Starlike and Convex Functions
|
New Subclasses of Harmonic Starlike and Convex Functions
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Saurabh Porwal(C. S. J. M. University); Kaushal Kishore Dixit(Gwalior Institute of Information Technology)"
] |
The purpose of the present paper is to establish some interesting results involving coefficient conditions, extreme points, distortion bounds and covering theorems for the classes VH(β) and UH(β). Further, various inclusion relations are also obtained for these classes. We also discuss a class preserving integral operator and show that these classes are closed under convolution and convex combinations.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802874
|
oai_dc
|
On SF-rings and Regular Rings
|
On SF-rings and Regular Rings
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Tikaram Subedi(North Eastern Hill University); Ardeline Mary Buhphang(North Eastern Hill University)"
] |
A ring R is called a left (right) SF-ring if simple left (right) R-modules are flat. It is still unknown whether a left (right) SF-ring is von Neumann regular. In this paper, we give some conditions for a left (right) SF-ring to be (a) von Neumann regular; (b) strongly regular; (c) division ring. It is proved that: (1) a right SF-ring R is regular if maximal essential right (left) ideals of R are weakly left (right) ideals of R (this result gives an affirmative answer to the question raised by Zhang in 1994); (2) a left SF-ring R is strongly regular if every non-zero left (right) ideal of R contains a non-zero left (right) ideal of R which is a W-ideal; (3) if R is a left SF-ring such that l(x) (r(x)) is an essential left (right) ideal for every right (left) zero divisor x of R, then R is a division ring.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802877
|
oai_dc
|
On the Definition of Intuitionistic Fuzzy h-ideals of Hemirings
|
On the Definition of Intuitionistic Fuzzy h-ideals of Hemirings
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Saifur Rahman(Rajiv Gandhi University); Helen Kumari Saikia(Gauhati University); Stoimenov, Aleksandar Georgiev(계명대학교)"
] |
Using the Lukasiewicz 3-valued implication operator, the notion of an (α,β)-intuitionistic fuzzy left ( right ) h-ideal of a hemiring is introduced, where α,β∈{∈,q,∈∧q,∈∨q}. We define intuitionistic fuzzy left ( right ) h-ideal with thresholds (s,t) of a hemiring R and investigate their various properties. We characterize intuitionistic fuzzy left ( right ) h-ideal with thresholds (s,t) and (α,β)-intuitionistic fuzzy left ( right ) h-ideal of a hemiring R by its level sets. We establish that an intuitionistic fuzzy set A of a hemiring R is a (∈,∈) (or (∈,∈∨q ) or (∈∧q,∈) )-intuitionistic fuzzy left ( right ) h-ideal of R if and only if A is an intuitionistic fuzzy left ( right ) h-ideal with thresholds (0,1) (or (0,0.5) or (0.5,1)) of R respectively. It is also shown that A is a (∈,∈) (or (∈,∈∨q ) or (∈∧q,∈) )-intuitionistic fuzzy left ( right ) h-ideal if and only if for any p∈(0,1] (or p∈(0,0.5] or p∈(0.5,1] ), Ap is a fuzzy left ( right ) h-ideal. Finally, we prove that an intuitionistic fuzzy set A of a hemiring R is an intuitionistic fuzzy left ( right ) h-ideal with thresholds (s,t) of R if and only if for any p∈(s,t], the cut set Ap is a fuzzy left ( right ) h-ideal of R.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802875
|
oai_dc
|
t-Prüfer Modules
|
t-Prüfer Modules
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"김명옥(경북대학교); 김환구(호서대학교); 오동렬(한밭대학교)"
] |
In this article, we characterize t-Prufer modules in the class of faithful multiplication modules. As a corollary, we also characterize Krull modules. Several properties of a t-invertible submodule of a faithful multiplication module are given.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802881
|
oai_dc
|
Weighted Carlson Mean of Positive Definite Matrices
|
Weighted Carlson Mean of Positive Definite Matrices
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"이호수(경북대학교)"
] |
Taking the weighted geometric mean [11] on the cone of positive definite matrix, we propose an iterative mean algorithm involving weighted arithmetic and geometric means of n−positive definite matrices which is a weighted version of Carlson mean presented by Lee and Lim [13]. We show that each sequence of the weigthed Carlson iterative mean algorithm has a common limit and the common limit of satisfies weighted multidimensional versions of all properties like permutation symmetry, concavity, monotonicity, homogeneity, congruence invariancy, duality, mean inequalities
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802869
|
oai_dc
|
Eigenvalues of Type r of the Basic Dirac Operator on Kähler Foliations
|
Eigenvalues of Type r of the Basic Dirac Operator on Kähler Foliations
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"정승달(제주대학교)"
] |
In this paper, we prove that on a K¨ahler spin foliatoin of codimension q = 2n,any eigenvalue λ of type r (r ∈ {1, · · · , [ n+1/2 ]}) of the basic Dirac operator Db satisfies theinequality λ2 ≥ r/4r−2 infM σ∇, where σ∇ is the transversal scalar curvature of F.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802870
|
oai_dc
|
Supra b-irresolutness and Supra b-connectedness on Topological Space
|
Supra b-irresolutness and Supra b-connectedness on Topological Space
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Osama Rashed Sayed(Assiut University); Takashi Noiri(2949-1 Shiokita-cho, Hinagu, Yatsushiri-shi, Kumamoto-ken)"
] |
In this paper, the concept of supra b-irresolute maps is introduced and several properties of it is investigated. Furthermore, the notion of supra b-connectedness is defined and researched by means of supra b-separated sets.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802876
|
oai_dc
|
A General System of Nonlinear Functional Equations in Non-Archimedean Spaces
|
A General System of Nonlinear Functional Equations in Non-Archimedean Spaces
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Mohammad Bagher Ghaemi(Iran University of Science and Technology); Hamid Majani(Iran University of Science and Technology); Madjid Eshaghi Gordji(Semnan University)"
] |
In this paper, we prove the generalized Hyers–Ulam–Rassias stability for a system of functional equations, called general system of nonlinear functional equations, in non-Archimedean normed spaces and Menger probabilistic non-Archimedean normed spaces.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802871
|
oai_dc
|
q-Analogue of Exponential Operators and Difference Equations
|
q-Analogue of Exponential Operators and Difference Equations
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Mohammad Asif(Aligarh Muslim University)"
] |
The present paper envisages the q-analogue of the exponential operators, determined by G. Dattoli and his collaborators for translation and diffusive operators which were utilized to establish analytical solutions of difference and integral equations. The generalization of their technique is expected to cover wide range of such utilization
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001802872
|
oai_dc
|
Some Further Results on Uniqueness of Entire Functions and Fixed Points
|
Some Further Results on Uniqueness of Entire Functions and Fixed Points
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Yan Liu(Xinzhai People’s Government of Yucheng City); Lian-Zhong Yang(Shandong University)"
] |
In this paper, we investigate the uniqueness problem on entire functions sharing fixed points (ignoring multiplicities). Our main results improve and generalize some results due to Zhang [13], Qi-Yang [10] and Dou-Qi-Yang [1].
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001753717
|
oai_dc
|
Some Characterizations of Parabolas
|
Some Characterizations of Parabolas
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"김동수(전남대학교); 박종호(전남대학교); 김영호(경북대학교)"
] |
We study some properties of tangent lines of parabolas. As a result, we establish some characterizations of parabolas.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001753734
|
oai_dc
|
On Nearly Pairwise Compact Spaces
|
On Nearly Pairwise Compact Spaces
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Ajoy Mukharjee(St. Joseph's College); Manoj Kumar Bose(University of North Bengal)"
] |
In this paper, we introduce the notion of near pairwise compactness which generalizes the notion of pairwise compactness.
|
수학
| null |
http://dx.doi.org/10.5666/KMJ.2013.53.1.125
|
kci_detailed_000037.xml
|
||
ART001753730
|
oai_dc
|
The Polynomial Numerical Index of Lp(μ)
|
The Polynomial Numerical Index of Lp(μ)
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"김성권(경북대학교)"
] |
We show that for 1 < p < ∞, k,m ∈ N, n(k)(lp) = inf{n(k)(lm p ) : m ∈ N}and that for any positive measure μ, n(k)(Lp(μ)) ≥ n(k)(lp). We also prove that for every Q ∈ P(klp : lp) (1 < p < ∞), if v(Q) = 0, then ∥Q∥ = 0.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001753668
|
oai_dc
|
Module-theoretic Characterizations of Strongly t-linked Ex- tensions
|
Module-theoretic Characterizations of Strongly t-linked Ex- tensions
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"김환구(호서대학교); 권태인(창원대학교)"
] |
In this paper, we introduce and study the concept of “strongly t-linked extensions”, which is a stronger version of t-linked extensions of integral domains. We showthat for an extension of Prufer v-multiplication domains, this concept is equivalent to thatof “w-faithfullyat”.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001753626
|
oai_dc
|
Subordination and Superordination for Multivalent Functions associated with the Differintegral Operator
|
Subordination and Superordination for Multivalent Functions associated with the Differintegral Operator
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"권오상(경성대학교); 조낙은(부경대학교)"
] |
The purpose of the present paper is to obtain some subordination- and superordination- preserving properties for multivalent function associated the differintegral operators defined on the space of normalized analytic functions in the open unit disk.
The sandwich type theorem for the integral operator is also considered.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001753746
|
oai_dc
|
Representation Theory of the Lie Group T3 and Three Index Bessel Functions
|
Representation Theory of the Lie Group T3 and Three Index Bessel Functions
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Mahmood Ahmad Pathan(University of Botswana); Mohannad Jamal Said Shahwan(University of Bahrain)"
] |
The theory of generalized Bessel functions is reformulated within the framework of an operational formalism using the multiplier representation of the Lie group T3as suggested by Miller. This point of view provides more efficient tools which allow the derivation of generating functions of generalized Bessel functions. A few special cases of interest are also discussed.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001753742
|
oai_dc
|
G-frames as Sums of Some g-orthonormal Bases
|
G-frames as Sums of Some g-orthonormal Bases
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Mohammad Reza Abdollahpour(University of Mohaghegh Ardabili); Abbas Najati(University of Mohaghegh Ardabili)"
] |
In this paper we show that a g-frame for a Hilbert space H can be written as a linear combination of two g-orthonormal bases for H if and only if it is a g-Riesz basis for H. Also, we show that every g-frame for a Hilbert space H is a multiple of a sum of three g-orthonormal bases for H.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001753703
|
oai_dc
|
Existence Results for the Nonlinear First Order Fuzzy Neutral Integrodifferential Equations
|
Existence Results for the Nonlinear First Order Fuzzy Neutral Integrodifferential Equations
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Bheeman Radhakrishnan(PSG College of Technology); Murugesan Nagarajan(Bharathiar University); Samayan Narayanamoorthy(Bharathiar University)"
] |
In this paper, we devoted to study the existence and uniqueness of nonlinear fuzzy neutral integrodifferential equations. Moreover we study the fuzzy solution for the normal, convex, upper semicontinuous, and compactly supported interval fuzzy number.
The results are obtained by using the Banach fixed-point theorem. An example is provided to illustrate the theory.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001753697
|
oai_dc
|
A Note on Maass-Jacobi Forms II
|
A Note on Maass-Jacobi Forms II
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"양재현(인하대학교)"
] |
This article is a continuation of the paper [21]. In this paper we deal with Maass-Jacobi forms on the Siegel-Jacobi space H x Cm, where H denotes the Poincar´e upper half plane and m is any positive integer.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001753661
|
oai_dc
|
Fekete-Szego Problem for a Generalized Subclass of Analytic Functions
|
Fekete-Szego Problem for a Generalized Subclass of Analytic Functions
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Halit Orhan(Ataturk University); Nihat Yagmur(Erzincan University); Murat Caglar(Ataturk University)"
] |
In this present work, the authors obtain Fekete-Szeg¨o inequality for certainnormalized analytic function f(z) defined on the open unit disk for which λβz3(L(a, c)f(z))′′′+ (2λβ +λ-β)z2(L(a, c)f(z))′′+ z(L(a, c)f(z))′/λβz2(L(a, c)f(z))′′+ (λ-β)z(L(a, c)f(z))′ + (1 - λ+β)(L(a, c)f(z)) (0 ≤ ≤ λ ≤ 1) lies in a region starlike with respect to 1 and is symmetric with respect to the real axis.
Also certain applications of the main result for a class of functions defined by Hadamardproduct (or convolution) are given. As a special case of this result, Fekete-Szeg¨o inequalityfor a class of functions defined through fractional derivatives are obtained.
|
수학
| null |
http://dx.doi.org/10.5666/KMJ.2013.53.1.13
|
kci_detailed_000037.xml
|
||
ART001753676
|
oai_dc
|
Characterizations of Several Modules Relative to the Class of B(M, X)
|
Characterizations of Several Modules Relative to the Class of B(M, X)
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Yahya Talebi(University of Mazandaran); Mehrab Hosseinpour(University of Mazandaran)"
] |
Let M and X be right R-modules. We introduce several modules relative to the class of B(M;X) and we investigate relation among these modules. In this note, we show if M is X- -supplemented such that M = M1+M2 implies M1 and M2 are relatively B-projective, then M is an X-H-supplemented module.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001753754
|
oai_dc
|
On the Folding of the Rectangular Distribution
|
On the Folding of the Rectangular Distribution
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"S. A. El-Shehawy(Menoufia University); M. Bashery(Suez Canal University)"
] |
Based on the concept of the folding, the folding in X-direction and in Y-direction are dened and denoted by the X-Folding and the Y-Folding respectively. We consider a random variable X which follows a rectangular distribution "R(a, b) distribu-tion" with two parameters a, b. This paper aims to apply the folding on the unit area P(a ≤X ≤ b) and also to study the proposed folding in each direction for R(a, b) distri-bution and the generated family of the corresponding constructed rectangular probability distributions. Some main properties of this family are reviewed. According to the pro-posed folding, we derive and discuss some important corresponding functions in closed forms.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001695760
|
oai_dc
|
On (ω)compactness and (ω)paracompactness
|
On (ω)compactness and (ω)paracompactness
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Rupesh Tiwari(St. Joseph’s College, India); Manoj Kumar Bose(University of North Bengal, India)"
] |
The notions of (ω)compactness and (ω)paracompactness are studied in prod-uct (ω)topology. The concept of countable (ω)paracompactness is introduced and some results on this notion are obtained.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001695754
|
oai_dc
|
A Characterization of M1-Spaces
|
A Characterization of M1-Spaces
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Cuiping Liu(Nankai University, P. R. China)"
] |
In this paper, we prove the following theorem which gives a characterization of M1-spaces by g-function.
Theorem. A space (X,µ) is an M1-space if and only if there exists a function g : ω×X →µ such that:1. {x} = ∩ng(n,x).
2. y ∈ g(n,x) ⇒ g(n,y) ⊂ g(n,x).
3. There exists a collection U = ∪nUn of open sets in (X,µ) such that:(a). ∪{g(n,x) : x ∈ Unα} is regular open for each Unα ∈ U.
(b). If H ⊂ X is closed with y / ∈ H, then y / ∈ Clµ(∪{g(n,x) : x ∈ Unα})for some Unα ∈ Un with H ⊂ Unα.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001695757
|
oai_dc
|
A New Hilbert-type Inequality with the Integral in Whole Plane
|
A New Hilbert-type Inequality with the Integral in Whole Plane
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Zitian Xie(Zhaoqing University); Zheng Zeng(Shaoguan University, China)"
] |
In this paper, by estimating the weight function, we give a new Hilbert-type inequality with the integral in whole plane. As its applications, we consider the equivalent and a particular result.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001695759
|
oai_dc
|
On Generalizations of the Hadamard Inequality for (α,m)-Convex Functions
|
On Generalizations of the Hadamard Inequality for (α,m)-Convex Functions
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Erhan Set(Düzce University, Turkey); Maryam Sardari(Institute for Advanced Studies in Basic Sciences, Iran); Muhamet Emin Ozdemir(Ataturk University); Jamal Rooin(Institute for Advanced Studies in Basic Sciences, Iran)"
] |
In this paper we establish several Hadamard-type integral inequalities for (α,m)−convex functions.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001695758
|
oai_dc
|
A New Approach to the Lebesgue-Radon-Nikodym Theorem with respect to Weighted p-adic Invariant Integral on Zp
|
A New Approach to the Lebesgue-Radon-Nikodym Theorem with respect to Weighted p-adic Invariant Integral on Zp
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"임석훈(경북대학교); 정주희(경북대학교)"
] |
We will give a new proof of the Lebesgue-Radon-Nikodym theorem with respect to weighted p-adic q-measure on Zp, using Mahler expansion of continuous functions, studied by the authors in 2012. In the special case, q =1, we can derive the same result as in Kim, 2012, Kim et al, 2011.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001695762
|
oai_dc
|
Partial Fraction Expansions for Newton’s and Halley’s Iterations for Square Roots
|
Partial Fraction Expansions for Newton’s and Halley’s Iterations for Square Roots
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Omran Kouba(Higher Institute for Applied Sciences and Technology, Syria)"
] |
When Newton’s method, or Halley’s method is used to approximate the pth root of 1−z, a sequence of rational functions is obtained. In this paper, a beautiful formula for these rational functions is proved in the square root case, using an interesting link to Chebyshev’s polynomials. It allows the determination of the sign of the coefficients of the power series expansion of these rational functions. This answers positively the square root case of a proposed conjecture by Guo(2010).
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001695756
|
oai_dc
|
On Absolute Almost Generalized Nörlund Summability of Orthogonal Series
|
On Absolute Almost Generalized Nörlund Summability of Orthogonal Series
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Xhevat Zahir Krasniqi(University of Prishtina, Kosovë)"
] |
In this paper we present some results on absolute almost generalized Nörlund summability of orthogonal series. The most important corollaries of the main results also are deduced.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001695753
|
oai_dc
|
Lens Surgeries along the n-twisted Whitehead Link
|
Lens Surgeries along the n-twisted Whitehead Link
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Teruhisa Kadokami(East China Normal University, China); Noriko Maruyama(Musashino Art University, Japan); Masafumi Shimozawa(Tokyo Woman’s Christian University, Japan)"
] |
We determine lens surgeries (i.e. Dehn surgery yielding a lens space) along the n-twisted Whitehead link. To do so, we first give necessary conditions to yield a lens space from the Alexander polynomial of the link as: (1) n = 1 (i.e. the Whitehead link), and (2) one of surgery coefficients is 1, 2 or 3. Our interests are not only lens surgery itself but also how to apply the Alexander polynomial for this kind of problems.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001695755
|
oai_dc
|
Isotropic Submanifolds of Real Space Forms
|
Isotropic Submanifolds of Real Space Forms
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"김영호(경북대학교)"
] |
We study some functions defined on the unit tangent space, which are formed with the second fundamental form of submanifolds of a real space form. These give an exact expression of isotropy of submanifolds in a real space form and a relationship between intrinsic invariants and extrinsic ones.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001695761
|
oai_dc
|
A New Time Stepping Method for Solving One Dimensional Burgers’ Equations
|
A New Time Stepping Method for Solving One Dimensional Burgers’ Equations
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"PIAOXIANGFAN(경북대학교); 김상동(경북대학교); 김필수(경북대학교); 김도형(경북대학교)"
] |
In this paper, we present a simple explicit type numerical method for dis-cretizations in time for solving one dimensional Burgers’ equations. The proposed method does not need an iteration process that may be required in most implicit methods and have good convergence and efficiency in computational sense compared to other known numerical methods. For evidences, several numerical demonstrations are also provided.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001682250
|
oai_dc
|
The Prime Avoidance Lemma Revisited
|
The Prime Avoidance Lemma Revisited
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Omid Ali Shahny Karamzadeh(Chamran University, Iran)"
] |
We show that the above lemma and its well-known refinement are valid, in a general setting, in non-commutative rings. Some interesting consequences are also observed.
|
수학
| null |
http://dx.doi.org/10.5666/KMJ.2012.52.2.149
|
kci_detailed_000037.xml
|
||
ART001682255
|
oai_dc
|
Alexander Polynomials of Knots Which Are Transformed into the Trefoil Knot by a Single Crossing Change
|
Alexander Polynomials of Knots Which Are Transformed into the Trefoil Knot by a Single Crossing Change
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Yasutaka Nakanishi(Kobe University)"
] |
By the works of Kondo and Sakai, it is known that Alexander polynomials of knots which are transformed into the trivial knot by a single crossing change are characterized. In this note, we will characterize Alexander polynomials of knots which are transformed into the trefoil knot (and into the figure-eight knot) by a single crossing change.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001682253
|
oai_dc
|
On Rings Containing a Non-essential nil−Injective Maximal Left Ideal
|
On Rings Containing a Non-essential nil−Injective Maximal Left Ideal
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Junchao Wei(Yangzhou University, P. R. China); Yinchun Qu(Yangzhou University, P. R. China)"
] |
We investigate in this paper rings containing a non-essential nil− injective maximal left ideal. We show that if R is a left MC2 ring containing a non essential nil−injective maximal left ideal, then R is a left nil− injective ring. Using this result, some known results are extended.
|
수학
| null |
http://dx.doi.org/10.5666/KMJ.2012.52.2.179
|
kci_detailed_000037.xml
|
||
ART001682252
|
oai_dc
|
Exponentially Fitted Error Correction Methods for Solving Initial Value Problems
|
Exponentially Fitted Error Correction Methods for Solving Initial Value Problems
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"김상동(경북대학교); 김필수(경북대학교)"
] |
In this article, we propose exponentially fitted error correction method (EECM) which originate from the error correction methods recently developed by the authors (see [10, 11] for examples) for solving nonlinear stiff initial value problems. We reduce the computational cost of the error correction method by making a local approximation of exponential type. This exponential local approximation yields an EECM that is exponentially fitted, A-stable and L stable, independent of the approximation scheme for the error correction. In particular, the classical explicit Runge-Kutta method for the error correction not only saves the computational cost that the error correction method requires but also gives the same convergence order as the error correction method does. Numerical evidence is provided to support the theoretical results.
|
수학
| null |
http://dx.doi.org/10.5666/KMJ.2012.52.2.167
|
kci_detailed_000037.xml
|
||
ART001682249
|
oai_dc
|
Strongly Summable Double Sequence Spaces in n−Normed Spaces Defined by Ideal Convergence and an Orlicz Function
|
Strongly Summable Double Sequence Spaces in n−Normed Spaces Defined by Ideal Convergence and an Orlicz Function
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Ayhan Esi(Adiyaman University)"
] |
In this paper we introduce some new double sequence spaces via ideal con-vergence and an Orlicz function in n−normed spaces and examine some properties of the resulting spaces.
|
수학
| null |
http://dx.doi.org/10.5666/KMJ.2012.52.2.137
|
kci_detailed_000037.xml
|
||
ART001682251
|
oai_dc
|
Some Fixed Point Theorems on G-Expansive Mappings
|
Some Fixed Point Theorems on G-Expansive Mappings
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Sushanta Kumar Mohanta(West Bengal State University, India)"
] |
In this paper, we have studied some fixed point theorems on complete G-metric spaces.
|
수학
| null |
http://dx.doi.org/10.5666/KMJ.2012.52.2.155
|
kci_detailed_000037.xml
|
||
ART001682254
|
oai_dc
|
On I-Convergent Double Sequences of Fuzzy Real Numbers
|
On I-Convergent Double Sequences of Fuzzy Real Numbers
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Binod Chandra Tripathy(Paschim Boragaon); Bipul Sarma(Paschim Boragaon)"
] |
In this article we introduce the class of I-convergent double sequences of fuzzy real numbers. We have studied different properties like solidness, symmetricity, monotone, sequence algebra etc. We prove that the class of I-convergent double sequences of fuzzy real numbers is a complete metric spaces.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001682257
|
oai_dc
|
On the Polynomial of the Dunwoody (1, 1)-knots
|
On the Polynomial of the Dunwoody (1, 1)-knots
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"김수환(동의대학교); 김양곡(동의대학교)"
] |
There is a special connection between the Alexander polynomial of (1,1)-knot and the certain polynomial associated to the Dunwoody 3-manifold ([3], [10] and [13]). We study the polynomial(called the Dunwoody polynomial) for the (1,1)-knot obtained by the certain cyclically presented group of the Dunwoody 3-manifold. We prove that the Dunwoody polynomial of (1,1)-knot in S3is to be the Alexander polynomial under the certain condition. Then we find an invariant for the certain class of torus knots and all 2-bridge knots by means of the Dunwoody polynomial.
|
수학
| null |
http://dx.doi.org/
|
kci_detailed_000037.xml
|
||
ART001682248
|
oai_dc
|
Serendipitous Functional Relations Deducible from Certain Generalized Triple Hypergeometric Functions
|
Serendipitous Functional Relations Deducible from Certain Generalized Triple Hypergeometric Functions
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"최준상(동국대학교); Anvar Hasanov(동국대); Mamasali Turaev(동국대학교)"
] |
We aim at presenting certain unexpected functional relations among various hypergeometric functions of one or several variables (for example, see the identities in Corollary 5) by making use of Carlson’s method employed in his work (Some extensions of Lardner’s relations between 0F3 and Bessel functions, SIAM J. Math. Anal. 1(2)(1970), 232-242)
|
수학
| null |
http://dx.doi.org/10.5666/KMJ.2012.52.2.109
|
kci_detailed_000037.xml
|
||
ART001682256
|
oai_dc
|
Sandwich Results for Certain Subclasses of Multivalent Analytic Functions Defined by Srivastava–Attiya Operator
|
Sandwich Results for Certain Subclasses of Multivalent Analytic Functions Defined by Srivastava–Attiya Operator
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"M. K. Aouf(Mansoura University); A. Shamandy(Mansoura University); A. O. Mostafa(Mansoura University); Eman A. Adwan(Mansoura University)"
] |
In this paper, we obtain some applications of first order differential subor-dination and superordination results involving the operator Jλ,ps,b for certain normalized p-valent analytic functions associated with that operator.
|
수학
| null |
http://dx.doi.org/10.5666/KMJ.2012.52.2.209
|
kci_detailed_000037.xml
|
||
ART001719371
|
oai_dc
|
On Two Dimensional q-Holder's Inequality
|
On Two Dimensional q-Holder's Inequality
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Wengui Yang(Sanmenxia Polytechnic, China.)"
] |
In this article, the reverse q-Holder type inequality and two dimensional q-Holder's inequality are established. We also obtain some q-integral inequalities by using q-Holder's inequality which give q-Hardy's inequalities as spacial cases.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001719369
|
oai_dc
|
On Ordered Ternary Semigroups
|
On Ordered Ternary Semigroups
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Vanita Rohit Daddi(D. Y. Patil College of Engineering and Technology, India); Yashashree Shivajirao Pawar(SKN Sinhgad College of Engineering, India)"
] |
We introduce the concepts of ordered quasi-ideals, ordered bi-ideals in an ordered ternary semigroup and study their properties. Also regular ordered ternary semigroup is dened and several ideal-theoretical characterizations of the regular ordered ternary semigroups are furnished.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001719368
|
oai_dc
|
Block LU Factorization for the Coupled Stokes Equations by Spectral Element Discretization
|
Block LU Factorization for the Coupled Stokes Equations by Spectral Element Discretization
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"PIAOXIANGFAN(경북대학교); 김필수(경북대학교); 김상동(경북대학교)"
] |
The block LU factorization is used to solve the coupled Stokes equations arisen from an optimal control problem subject to Stokes equations. The convergence of the spectral element solution is proved. Some numerical evidences are provided for the model coupled Stokes equations. Moreover, as an application, this algorithm is performed for an optimal control problem.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001719370
|
oai_dc
|
Numerical Inversion Technique for the One and Two-Dimensional L2-Transform Using the Fourier Series and Its Application to Fractional Partial Differential Equations
|
Numerical Inversion Technique for the One and Two-Dimensional L2-Transform Using the Fourier Series and Its Application to Fractional Partial Differential Equations
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Arman Aghili(University of Guilan, Iran); Alireza Ansari(Shahrekord University, Iran)"
] |
In this paper, we use a computational algorithm for the inversion of the one and two-dimensional L2-transform based on the Bromwich's integral and the Fourier series. The new inversion formula can evaluate the inverse of the L2-transform with considerable accuracy over a wide range of values of the independent variable and can be devised for the functions which are not Laplace transformable and have damping motion in small interval near origin.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001719374
|
oai_dc
|
Strong Convergence of Modified Iteration Processes for Relatively Weak Nonexpansive Mappings
|
Strong Convergence of Modified Iteration Processes for Relatively Weak Nonexpansive Mappings
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Daruni Boonchari(Mahasarakham University); Satit Saejung(Khon Kaen University)"
] |
We adapt the concept of shrinking projection method of Takahashi et al. [J.
Math. Anal. Appl. 341(2008), 276{286] to the iteration scheme studied by Kim and Lee [Kyungpook Math. J. 48(2008), 685{703] for two relatively weak nonexpansive mappings. By letting one of the two mappings be the identity mapping, we also obtain strong convergence theorems for a single mapping with two types of computational errors. Finally, we improve Kim and Lee's convergence theorem in the sense that the same conclusion still holds without the uniform continuity of mappings as was the case in their result.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001719375
|
oai_dc
|
Screen Slant Lightlike Submanifolds of Indefinite Sasakian Manifolds
|
Screen Slant Lightlike Submanifolds of Indefinite Sasakian Manifolds
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"S. M. Khursheed Haider(Jamia Millia Islamia, India); Advin(Jamia Millia Islamia, India); Mamta Thakur(Jamia Millia Islamia, India)"
] |
In this paper, we introduce screen slant lightlike submanifold of an indefinite Sasakian manifold and give examples. We prove a characterization theorem for the existence of screen slant lightlike submanifolds. We also obtain integrability conditions of both screen and radical distributions, prove characterization theorems on the existence of minimal screen slant lightlike submanifolds and give an example of proper minimal screen slant lightlike submanifolds of R92.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001719372
|
oai_dc
|
A Unified Theory for Certain Weak Forms of Open Sets and Their Variant Forms
|
A Unified Theory for Certain Weak Forms of Open Sets and Their Variant Forms
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Bishwambhar Roy(Women's Christian College, India); Ritu Sen(S. A. Jaipuria College, India)"
] |
The purpose of the present paper is towards working out a unified version of the study of certain weak forms of generalized open sets and their neighbouring forms, as are already available in the literature. In terms of an operation, as initiated by A. Csaszar, we introduce unied denitions of ∧-sets,∨-sets, g:∧-sets and g:∨-sets and derive results concerning them.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001719376
|
oai_dc
|
Dangerous Border-collision Bifurcation for a Piecewise Smooth Nonlinear System
|
Dangerous Border-collision Bifurcation for a Piecewise Smooth Nonlinear System
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"강훈석(숭실대학교)"
] |
A piecewise smooth system is characterized by non-differentiability on a curve in the phase space. In this paper, we discuss particular bifurcation phenomena in the dynamics of a piecewise smooth system. We consider a two-dimensional piecewise smooth system which is composed of a linear map and a nonlinear map, and analyze the stability of the system to determine the existence of dangerous border-collision bifurcation. We finally present some numerical examples of the bifurcation phenomena in the system.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001719377
|
oai_dc
|
Lacunary I-Convergent Sequences
|
Lacunary I-Convergent Sequences
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Binod Chandra Tripathy(Paschim Boragaon); Bipan Hazarika(Rajiv Gandhi University); Bisweshwar Choudhary(University of Botswana)"
] |
In this article we introduce the concepts of lacunary I- convergent sequences. We investigate its different properties like solid, symmetric, convergence free etc.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001719373
|
oai_dc
|
Conditional Integral Transforms on a Function Space
|
Conditional Integral Transforms on a Function Space
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"조동현(경기대학교)"
] |
Let Cr[0; t] be the function space of the vector-valued continuous paths x : [0; t] ! Rr and define Xt : Cr[0; t] ! R(n+1)r and Yt : Cr[0; t] ! Rnr by Xt(x) = (x(t0); x(t1); ; x(tn1); x(tn)) and Yt(x) = (x(t0); x(t1); ; x(tn1)), respectively, where 0 = t0 < t1 < < tn = t. In the present paper, using two simple formulas for the conditional expectations over Cr[0; t] with the conditioning functions Xt and Yt, we establish evaluation formulas for the analogue of the conditional analytic Fourier-Feynman transform for the function of the form
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001719379
|
oai_dc
|
Improvement of Jensen's Inequality in terms of G^ateaux Derivatives for Convex Functions in Linear Spaces with Applications
|
Improvement of Jensen's Inequality in terms of G^ateaux Derivatives for Convex Functions in Linear Spaces with Applications
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Muhammad Adil Khan(University of Peshawar, Pakistan); Sadia Khalid(GC University, Pakistan); Josip Pecaric(University of Zagreb)"
] |
In this paper, we prove some inequalities in terms of G^ateaux derivatives for convex functions dened on linear spaces and also give improvement of Jensen's inequality. Furthermore, we give applications for norms, mean f-deviations and f-divergence measures.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001719378
|
oai_dc
|
Commutative Ideals in BE-algebras
|
Commutative Ideals in BE-algebras
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Akbar Rezaei(Peyame Noor University); Arsham Borumand Saeid(Shahid Bahonar University of Kerman)"
] |
In this paper we study properties of commutative BE{algebras and we give the construction of quotient (X=I; ; I) of a commutative BE{algebra X via an obstinate ideal I of X. We construct upper semilattice and prove that is a nearlattice. Finally we define and study commutative ideals in BE-algebras.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001719380
|
oai_dc
|
The Existence of an Alternating Sign on a Spanning Tree of Graphs
|
The Existence of an Alternating Sign on a Spanning Tree of Graphs
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"김동석(경기대학교); 권영수(영남대학교); 이재운(영남대학교)"
] |
For a spanning tree T of a connected graph and for a labelling : E(T ) is called an alternating sign on a spanning tree T of a graph if for any cotree edge e 2 E()−E(T ), the unique path in T joining both end vertices of e has alternating signs. In the present article, we prove that any graph has a spanning tree T and an alternating sign on T .
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001646551
|
oai_dc
|
Five Cycles are Highly Ramsey Infinite
|
Five Cycles are Highly Ramsey Infinite
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"시거스, 마크 할버(경북대학교)"
] |
In a previous paper, the author proved that all odd cycles, except five cycles,are highly Ramsey-infinite. In this paper, we fill in the missing case, and show that five cycles are highly Ramsey-infinite.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001646598
|
oai_dc
|
Further Results about the Normal Family of Meromorphic Functions and Shared Sets
|
Further Results about the Normal Family of Meromorphic Functions and Shared Sets
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Jianming Qi(Shanghai Dianji University); Guowei Zhang(Anyang Normal University); Linlin Zhou(Zhenjiang watercraft college)"
] |
Let F be a family of meromorphic functions in a domain D, and let k, n(≥ 2)be two positive integers, and let S = {a1,a2,...,an}, where a1,a2,...,an are distinct finite complex numbers. If for each f ∈ F, all zeros of f have multiplicity at least k + 1, f and G(f) share the set S in D, where G(f) = P(f(k))+H(f) is a differential polynomial of f, then F is normal in D
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001646609
|
oai_dc
|
Soft Hemirings Related to Fuzzy Set Theory
|
Soft Hemirings Related to Fuzzy Set Theory
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"huajunwu(Hubei Institute for Nationalities); Jianming Zhan(Hubei University for Nationalities)"
] |
In this paper, we investigate soft hemirings by fuzzy theory. Some characterizations of hemirings are introduced by means of soft sets. In particular, the h-hemiregular hemirings and h-intra-hemiregular hemirings are also characterized.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001646587
|
oai_dc
|
C-parallel Mean Curvature Vector Fields along Slant Curvesin Sasakian 3-manifolds
|
C-parallel Mean Curvature Vector Fields along Slant Curvesin Sasakian 3-manifolds
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"이지은(이화여자대학교); 서영진(경북대학교); 이현진(경북대학교)"
] |
In this article, using the example of C. Camci([7]) we reconfirm necessary sufficient condition for a slant curve. Next, we find some necessary and sufficient conditions for a slant curve in a Sasakian 3-manifold to have: (i) a C-parallel mean curvature vector field; (ii) a C-proper mean curvature vector field (in the normal bundle).
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001646546
|
oai_dc
|
Four-dimensional Naturally Reductive Pseudo-Riemannian Homogeneous Spaces
|
Four-dimensional Naturally Reductive Pseudo-Riemannian Homogeneous Spaces
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Barbara De Leo(Universita del Salento)"
] |
Our attention is turned to four-dimensional pseudo-Riemannian naturally reductive homogeneous spaces. In particular, our study leads to a complete classification of them.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001646615
|
oai_dc
|
Projective Change between Two Finsler Spaces with (α,β)-metric
|
Projective Change between Two Finsler Spaces with (α,β)-metric
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Narasimhamurthy Senajji Kampalappa(Kuvempu University); Vasantha Dogehalli Mylarappa(Kuvempu University)"
] |
In the present paper, we find the conditions to characterize projective change between two (α,β)-metrics, such as Matsumoto metric L = α2 α−βand Randers metric¯L = ¯ α +¯β on a manifold with dim n > 2, where α and ¯ α are two Riemannian metrics, β and¯β are two non-zero 1-forms.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001646555
|
oai_dc
|
On Certain Class of Multivalent Functions Involving the Cho-Kwon-Srivastava Operator
|
On Certain Class of Multivalent Functions Involving the Cho-Kwon-Srivastava Operator
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Jamal Mohammad Shenan(Alazhar University-Gaza, Palestine)"
] |
In this paper a new subclass of multivalent functions with negative coefficients defined by Cho-Kwon-Srivastava operator is introduced. Coefficient estimate and inclusion relationships involving the neighborhoods of p-valently analytic functions are investigated for this class. Further subordination result and results on partial sums for this class are also found.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001646617
|
oai_dc
|
On 2-Absorbing and Weakly 2-Absorbing Ideals of Commutative Semirings
|
On 2-Absorbing and Weakly 2-Absorbing Ideals of Commutative Semirings
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Ahmad Yousefian Darani(University of Mohaghegh Ardabili)"
] |
Let R be a commutative semiring. We define a proper ideal I of R to be 2-absorbing (resp., weakly 2-absorbing) if abc ∈ I (resp., 0 ̸= abc ∈ I)implies ab ∈ I or ac ∈ I or bc ∈ I. We show that a weakly 2-absorbing ideal I with I3= 0 is 2-absorbing. We give a number of results concerning 2-absorbing and weakly 2-absorbing ideals and examples of weakly 2-absorbing ideals. Finally we define the concept of 0 −(1−,2−,3−)2- absorbing ideals of R and study the relationship among these classes of ideals of R.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001646558
|
oai_dc
|
On a Certain Integral Operator
|
On a Certain Integral Operator
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Saurabh Porwal(C. S. J. M. University, India); Muhammed Kamal Aouf(University of Mansoura)"
] |
The purpose of the present paper is to investigate mapping properties of an integral operator in which we show that the function g defined by g(z) ={c + αzc∫z0tc−1(Dnf)α(t)dt}1/.α. belongs to the class S(A,B) if f ∈ (n,A,B).
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001646619
|
oai_dc
|
On Completely ρ-Irresolute and Weakly ρ-Irresolute Functions
|
On Completely ρ-Irresolute and Weakly ρ-Irresolute Functions
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Devamanoharan Chitharanjan(V. O. Chidambaram College); Pious Missier(V. O. Chidambaram College)"
] |
The purpose of this paper is to introduce two new types of irresolute functions called, completely ρ-irresolute functions and weakly ρ-irresolute functions. We obtain their characterizations and their basic properties.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001587150
|
oai_dc
|
Certain Class of Multidimensional Convolution Integral Equations Involving a Generalized Polynomial Set
|
Certain Class of Multidimensional Convolution Integral Equations Involving a Generalized Polynomial Set
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Jamal Mohammed Shenan(Al-Azhar University-Gaza); Tariq Omar Salim(Al-Azhar University-Gaza)"
] |
The aim of this paper is to obtain a solution of a certain multidimensional convolution integral equation of Fredholm type whose kernel involves a generalized polynomial set. A number of results follow as special cases from the main theorem by specifying the parameters of the generalized polynomial set.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001587152
|
oai_dc
|
On a Class of Semicommutative Rings
|
On a Class of Semicommutative Rings
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Tahire Özen(Abant İzzet Baysal University); Nazim Agayev(University of Lefke); Abdullah Harmanci(Hacettepe University)"
] |
In this paper, a generalization of the class of semicommutative rings is investigated. A ring R is called central semicommutative if for any a, b ∈ R, ab = 0 implies arb is a central element of R for each r ∈ R. We prove that some results on semicommutative rings can be extended to central semicommutative rings for this general settings.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001587154
|
oai_dc
|
On *-bimultipliers, Generalized *-biderivations and Related Mappings
|
On *-bimultipliers, Generalized *-biderivations and Related Mappings
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Shakir Ali(Aligarh Muslim University); Mohammad Salahuddin Khan(Aligarh Muslim University)"
] |
In this paper we define the notions of left *-bimultiplier, *-bimultiplier and generalized *-biderivation, and to prove that if a semiprime *-ring admits a left *-bimultiplier M, then M maps R × R into Z(R). In Section 3, we discuss the applications of theory of *-bimultipliers. Further, it was shown that if a semiprime *-ring R admits a symmetric generalized *-biderivation G : R × R → R with an associated nonzero symmet-ric *-biderivation B : R × R → R, then G maps R × R into Z(R). As an application, we establish corresponding results in the setting of C*-algebra.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001587149
|
oai_dc
|
Coefficient Inequalities for Certain Subclasses of Analytic Functions Dened by Using a General Derivative Operator
|
Coefficient Inequalities for Certain Subclasses of Analytic Functions Dened by Using a General Derivative Operator
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Serap Bulut(Kocaeli University)"
] |
In this paper, we dene new classes of analytic functions using a general derivative operator which is a unication of the Salagean derivative operator, the Owa-Srivastava fractional calculus operator and the Al-Oboudi operator, and discuss some coefficient inequalities for functions belong to this classes.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001587155
|
oai_dc
|
Some Properties of the Closure Operator of a Pi-space
|
Some Properties of the Closure Operator of a Pi-space
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Hua Mao(Hebei University); Sanyang Liu(Xidian University)"
] |
In this paper, we generalize the definition of a closure operator for a finite matroid to a pi-space and obtain the corresponding closure axioms. Then we discuss some properties of pi-spaces using the closure axioms and prove the non-existence for the dual of a pi-space. We also present some results on the automorphism group of a pi-space.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001587158
|
oai_dc
|
On Paranormed Type Fuzzy Real Valued Class of Sequences 2^ℓ^F (p)
|
On Paranormed Type Fuzzy Real Valued Class of Sequences 2^ℓ^F (p)
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Mausumi Sen(National Institute of Tecgnology); Santanu Roy(National Institute of Tecgnology)"
] |
In this article we introduce the fuzzy real valued double sequence spaces 2^ℓ^F (p) where p = (p_(nk)) is a double sequence of bounded strictly positive numbers. We study their different properties like completeness , solidness , symmetricity, convergence free etc. We prove some inclusion results also.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001587151
|
oai_dc
|
On Seifert Matrices of Symmetric Links
|
On Seifert Matrices of Symmetric Links
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"배용주(경북대학교); 이인숙(경북대학교)"
] |
In this paper, we will construct symmetric links by using the method adapted from the graph theory, and study a Seifert matrix of a symmetric link from the information of the Seifert matrix of the base link and the corresponding group action.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001587156
|
oai_dc
|
(~g, s)-Continuous Functions between Topological Spaces
|
(~g, s)-Continuous Functions between Topological Spaces
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"O. Ravi(P. M. Thevar College); S. Chandrasekar(Muthayammal Engineering College); S. Ganesan(N. M. S. S. V. N College)"
] |
In this paper, we introduce (~g, s)-continuous functions between topological spaces, study some of its basic properties and discuss its relationships with other topological functions.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001587153
|
oai_dc
|
Path-Connectivity of Two-Interval MSF Wavelets
|
Path-Connectivity of Two-Interval MSF Wavelets
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Divya Singh(University of Allahabad)"
] |
In this paper, we obtain that the space W₂of minimally supported frequency wavelets, the supports of whose Fourier transforms consist of two intervals, is path-connected.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001587157
|
oai_dc
|
Kaplansky-type Theorems, II
|
Kaplansky-type Theorems, II
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"장규환(인천대학교); 김환구(호서대학교)"
] |
Let D be an integral domain with quotient field K, X be an indeterminate over D, and D[X] be the polynomial ring over D. A prime ideal Q of D[X] is called an upper to zero in D[X] if Q = fK[X] ∩ D[X] for some f ∈ D[X]. In this paper, we study integral domains D such that every upper to zero in D[X] contains a prime element (resp., a primary element, a t-invertible primary ideal, an invertible primary ideal).
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001610094
|
oai_dc
|
Subordination Problems of Robertson Functions
|
Subordination Problems of Robertson Functions
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Li-Mei Wang(Tohoku University)"
] |
In the present paper, we are concerned with subordination problems related to λ-Robertson function. The radii of λ-spirallikeness and starlikeness of λ-Robertson function are also determined.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001610093
|
oai_dc
|
Real Hypersurfaces in Complex Two-plane Grassmannians with F-parallel Normal Jacobi Operator
|
Real Hypersurfaces in Complex Two-plane Grassmannians with F-parallel Normal Jacobi Operator
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"정임순(경북대학교); 서영진(경북대학교)"
] |
In this paper we give a non-existence theorem for Hopf hypersurfaces M in complex two-plane Grassmannians G2(C^(m+2)) whose normal Jacobi operator R_N is parallel on the distribution F defined by F = [ξ]∪D^⊥, where[ξ] = Span{ξ}, D^⊥ = Span{ξ₁, ξ₂, ξ₃} and T_xM = D ⊕ D^⊥, x ∈ M.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001610087
|
oai_dc
|
Duality in an Optimal Harvesting Problem by a Nonlinear Age-Spatial Structured Population Dynamic System
|
Duality in an Optimal Harvesting Problem by a Nonlinear Age-Spatial Structured Population Dynamic System
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"김용국(경북대학교); 이미진(부산대학교); 정일효(부산대학교)"
] |
Duality in the optimal harvesting for a nonlinear age-spatial structured population dynamic model is studied in the framework of optimal control problem. In this paper the duality theory that displays the conjugacy of the primal problem is established and an application is given. Duality theory plays an important role in both optimization theory and methodology and the results may be applied to a realistic biological system on the point of optimal harvesting.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001610102
|
oai_dc
|
On N(κ)-Contact Metric Manifolds Satisfying Certain Curvature Conditions
|
On N(κ)-Contact Metric Manifolds Satisfying Certain Curvature Conditions
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Avik De(University of Calcutta); 전재복(국민대학교)"
] |
We consider pseudo-symmetric and Ricci generalized pseudo-symmetric N(κ)-contact metric manifolds. We also consider N(κ)-contact metric manifolds satisfying the condition S · R = 0 where R and S denote the curvature tensor and the Ricci tensor respectively. Finally we give some examples.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001610088
|
oai_dc
|
Related Fixed Point Theorem for Six Mappings on Three Fuzzy Metric Spaces
|
Related Fixed Point Theorem for Six Mappings on Three Fuzzy Metric Spaces
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Sushil Sharma(Vikram University); Prashant Tilwankar(Devi Ahilya University)"
] |
Related fixed point theorems on two or three metric spaces have been proved in different ways.However, so for the related fixed point theorem on fuzzy metric spaces have not been proved. Sharma, Deshpande and Thakur were the first who have established related fixed point theorem for four mappings on two complete fuzzy metric spaces. Their work was maiden in this line. In this paper we obtain a related fixed point theorem for six mappings on three complete fuzzy metric spaces. Of course this is a new result on this line.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001610100
|
oai_dc
|
A Chebyshev Collocation Method for Stiff Initial Value Problems and Its Stability
|
A Chebyshev Collocation Method for Stiff Initial Value Problems and Its Stability
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"김상동(경북대학교); 권종겸(경북대학교); 박상범(경북대학교); 김필수(경북대학교)"
] |
The Chebyshev collocation method in [21] to solve stiff initial-value problems is generalized by using arbitrary degrees of interpolation polynomials and arbitrary collocation points. The convergence of this generalized Chebyshev collocation method is shown to be independent of the chosen collocation points. It is observed how the stability region does depend on collocation points. In particular, A-stability is shown by taking the mid points of nodes as collocation points.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001610090
|
oai_dc
|
Baer and Quasi-Baer Modules over Some Classes of Rings
|
Baer and Quasi-Baer Modules over Some Classes of Rings
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Abdelfattah Haily(Morocco); Hamid Rahnaoui(Morocco)"
] |
We study Baer and quasi-Baer modules over some classes of rings. We also introduce a new class of modules called AI-modules, in which the kernel of every nonzero endomorphism is contained in a proper direct summand.
The main results obtained here are: (1) A module is Baer iff it is an AI-module and has SSIP. (2) For a perfect ring R, the direct sum of Baer modules is Baer iff R is primary decomposable. (3) Every injective R-module is quasi-Baer iff R is a QI-ring.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001610091
|
oai_dc
|
On Some Lacunary Generalized Difference Sequence Spaces of Invariant Means Defined by a Sequence of Modulus Functions
|
On Some Lacunary Generalized Difference Sequence Spaces of Invariant Means Defined by a Sequence of Modulus Functions
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Gülcan Atici(Muş Alparslan University); Çiğdem Asma Bektaş(Firat University)"
] |
The aim of this paper is to introduce and study the sequence spaces [w, θ, F, p, q]∞(Δ^m_v), [w, θ, F, p, q]₁∞(Δ^m_v) and [w, θ, F, p, q]_0∞(Δ^m_v) which arise from the notions of generalized difference sequence space, lacunary convergence, invariant mean and a sequence of Moduli F = (f_k). We establish some inclusion relations between these spaces under some conditions.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001610098
|
oai_dc
|
On b-Locally Open Sets in Bitopological Spaces
|
On b-Locally Open Sets in Bitopological Spaces
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Binod Chandra Tripathy(Institute of Advanced Study in Science and Technology); Diganta Jyoti Sarma(Institute of Advanced Study in Science and Technology)"
] |
In this article we introduce the notion of b-locally open sets, bLO* sets, bLO** sets in bitopological spaces and obtain several characterizations and some properties of these sets.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001610096
|
oai_dc
|
Resonance of Continued Fractions Related to 2ψ2 Basic Bilateral Hypergeometric Series
|
Resonance of Continued Fractions Related to 2ψ2 Basic Bilateral Hypergeometric Series
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Pankaj Srivastava(Motilal Nehru National Institute of Technology)"
] |
In this paper, making use of transformation due to S. N. Singh [21], an attempt has been made to establish certain results involving basic bilateral hypergeometric series and continued fractions.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001558916
|
oai_dc
|
I-Monotonic and I-Convergent Sequences
|
I-Monotonic and I-Convergent Sequences
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Binod Chandra Tripathy(Institute of Advanced Study in Science and Technology); Bipan Hazarika(Rajiv Gandhi University)"
] |
In this article we study the noton of I-monotonic sequences. We prove the decomposition theorem and generalize some of the results on monotonic sequences. We also introduce I-convergent series and studied some results.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001558913
|
oai_dc
|
On a Result of N. Terglane
|
On a Result of N. Terglane
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Indrajit Lahiri(University of Kalyani); Goutam Kumar Ghosh(G.M.S.M. Mahavidyalaya)"
] |
We prove a uniqueness theorem for meromorphic functions sharing three weighted values, which improves a result given by N. Terglane in 1989 and a result given by X. M. Li and H. X. Yi in 2003. Some examples are provided to show that the result of the paper is best possible.
|
수학
| null |
kci_detailed_000037.xml
|
|||
ART001558915
|
oai_dc
|
Differential Sandwich Theorem for Multivalent Meromorphic Functions associated with the Liu-Srivastava Operator
|
Differential Sandwich Theorem for Multivalent Meromorphic Functions associated with the Liu-Srivastava Operator
|
{
"journal_name": "경북대학교 자연과학대학 수학과",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
}
|
[
"Rosihan M. Ali(Universiti Sains Malaysia); R. Chandrashekar(Universiti Sains Malaysia); See Keong Lee(Universiti Sains Malaysia); A. Swaminathan(Indian Institute of Technology); V. Ravichandran(University of Delhi)"
] |
Differential subordination and superordination results are obtained for multivalent meromorphic functions associated with the Liu-Srivastava linear operator in the punctured unit disk. These results are derived by investigating appropriate classes of admissible functions. Sandwich-type results are also obtained.
|
수학
| null |
kci_detailed_000037.xml
|
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