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https://rmostowy.github.io/covid-19/methodology/
# Real-time analysis of the COVID-19 pandemic in Poland ## Methodology The underlying epidemiological model is based on the classical SEIR approach with the important difference that it explicitly considers people who are admitted to the hospital, the ICU and those who die from infection. The exact model is a determi...
2022-08-16T18:39:15
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http://www.mathnet.ru/php/archive.phtml?wshow=paper&jrnid=jsfu&paperid=544&option_lang=eng
RUS  ENG JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PERSONAL OFFICE General information Latest issue Archive Impact factor Guidelines for authors Search papers Search references RSS Latest issue Current issues Archive issues What is RSS J. Sib. Fed. Univ. Math. Phys.: Year: Volume: ...
2019-06-18T20:53:12
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https://mymusing.co/string-search-algorithms/
## Introduction In this article, we’ll show several algorithms for searching for a pattern in a text. The fundamental string searching (matching) problem is defined as follows: given two strings – a text and a pattern, determine whether the pattern appears in the text. ## Naive Method For every position in the text,...
2023-03-21T23:19:18
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https://biz.libretexts.org/Bookshelves/Accounting/Book%3A_Financial_Accounting/08%3A_How_Does_a_Company_Gather_Information_about_Its_Inventory%3F/8.01%3A_Determining_and_Reporting_the_Cost_of_Inventory
# 8.1: Determining and Reporting the Cost of Inventory Learning Objectives At the end of this section, students should be able to meet the following objectives: 1. Understand that inventory is recorded initially at its historical cost. 2. Provide the guiding rule for identifying expenditures and other costs that mus...
2020-01-24T11:17:28
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https://physjam.wordpress.com/2011/05/21/symmetry-lie-algebras-and-differential-equations-part-1/
## Symmetry, Lie Algebras and Differential Equations Part 1 There is a deep relationship between being able to solve a differential equation and its symmetries. Much of the theory of second order linear differential equations is really the theory of infinite dimensional linear algebra. In particular Sturm-Liouville th...
2017-09-23T19:50:42
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http://www.zachsmithwick.com/why-we-need-to-end-our-love-affair-with-hard-work/
# Why We Need to End Our Love Affair with "Hard Work" There are countless adages that praise hard work and determination, and for good reason. America, in particular, seems to always tout itself as a great nation of "hard working" people. There's nothing wrong with hard work, in fact it is quite a good thing to have ...
2019-09-16T00:59:57
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http://math.stackexchange.com/questions/902017/how-far-can-one-see-over-the-ocean
# How far can one see over the ocean? Since Earth is a sphere, one has only a limited visibility radius. How far is that, actually? This Q&A was inspired by this question, about whether or not Legolas can see the 24km distant Riders of Rohan. - I have up-voted both the question and the answer by M.Herzkamp, but I al...
2016-02-09T11:51:45
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http://mathoverflow.net/questions/160270/number-of-rational-curves-on-varieties-over-finite-fields
Number of rational curves on varieties over finite fields Let $k$ be a finite field. Let $P_r$ be set of degree $r$ binary forms over $k$. We define $$\mathcal{M}_r = \{ (x_0, ..., x_n) \in P_r^{n+1} : x_0^d + ... + x_n^d = 0 \text{ and the }x_i \text{'s don't have a common factor} \}.$$ I am interested in knowing wh...
2015-04-18T15:39:58
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https://www.physicsforums.com/threads/solar-radius-of-a-star.355536/
# Homework Help: Solar radius of a star 1. Nov 17, 2009 ### snabelpablo A star's surface sends out energy in form of electromagnetic radiation and has an emissivity close to 1. Find the solar radius of Rigel that emits energy at a rate of 2,7 * 10^32W and has a surface temperature of 11000K. You may assume the star ...
2018-05-25T11:23:18
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https://solvedlib.com/forcast-time-series-question-a-the-values-of-the,143896
# Forcast , time series question. (a) The values of the smoothing constants, a, y, and 8... ###### Question: forcast , time series question. (a) The values of the smoothing constants, a, y, and 8 for Holt-Winters method fall between 0 and 1. Explain what happens when each of them approaches or equals the values 0 and...
2022-07-06T07:17:52
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https://www.sparrho.com/item/the-similarity-problem-for-indefinite-sturm-liouville-operators-and-the-help-inequality/8ad798/
# The similarity problem for indefinite Sturm-Liouville operators and the HELP inequality Research paper by Aleksey Kostenko Indexed on: 11 Jul '12Published on: 11 Jul '12Published in: Mathematics - Spectral Theory #### Abstract We study two problems. The first one is the similarity problem for the indefinite Sturm...
2022-01-24T23:29:24
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https://mathoverflow.net/questions/396077/convex-polyhedra-that-can-be-folded-from-convex-polygons
Convex polyhedra that can be folded from convex polygons This question is based on http://www.science.smith.edu/~jorourke/Papers/FoldingPP.pdf. Therein is stated the theorem: Every convex polygon folds to an infinite number (a continuum) of noncongruent convex polyhedra. Question: What could one say in the reverse d...
2022-08-14T00:19:40
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https://pos.sissa.it/336/186/
Volume 336 - XIII Quark Confinement and the Hadron Spectrum (Confinement2018) - E: QCD and New Physics Hadronic contributions to the muon anomalous magnetic moment M. Procura,* G. Colangelo, M. Hoferichter, P. Stoffer *corresponding author Full text: pdf Pre-published on: 2019 September 12 Published on: 2019 September ...
2020-05-29T12:25:10
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https://cds.ismrm.org/protected/18MProceedings/PDFfiles/4258.html
### 4258 Hybrid-State Free Precession for Measuring Magnetic Resonance Relaxation Times Jakob Assländer1,2, Daniel K Sodickson1,2,3, Riccardo Lattanzi1,2,3, and Martijn Cloos1,2 1Bernard and Irene Schwartz Center for Biomedical Imaging, Dept. of Radiology, New York University School of Medicine, New York, NY, United ...
2021-06-22T05:01:45
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https://academ.us/list/econ/
### Mental health concerns prelude the Great Resignation: Evidence from Social Media To study the causes of the 2021 Great Resignation, we use text analysis to investigate the changes in work- and quit-related posts between 2018 and 2021 on Reddit. We find that the Reddit discourse evolution resembles the dynamics of ...
2022-08-18T08:39:33
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http://vm.udsu.ru/issues/archive/issue/2015-1-9
+7 (3412) 91 60 92 ## Archive of Issues Russia Yekaterinburg Year 2015 Volume 25 Issue 1 Pages 78-92 Section Mathematics Title Convergence of the difference method of solving the two-dimensional wave equation with heredity Author(-s) Tashirova E.E.a Affiliations Ural Federal Universitya Abstract The paper presents t...
2020-11-29T16:32:31
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https://faculty.math.illinois.edu/Macaulay2/doc/Macaulay2-1.21/share/doc/Macaulay2/Topcom/html/index.html
# Topcom -- interface to selected functions from topcom package ## Description Topcom is mathematical software written by Jorg Rambau for computing and manipulating triangulations of polytopes and chirotopes. This Macaulay2 package provides an interface for some of the functionality of this software. The package is...
2023-03-24T21:39:57
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https://solvedlib.com/find-the-equation-of-a-line-parallel-to-2x5y3-and,15814
Find the equation of a line parallel to 2x+5y=3 and passing through (2,-3)? Question: Find the equation of a line parallel to 2x+5y=3 and passing through (2,-3)? Similar Solved Questions Explain signal transduction and the sensory motor pathways of animals using the examples of the vertebrate... explain signal tran...
2023-03-25T07:19:01
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https://www.aimsciences.org/article/doi/10.3934/dcds.2011.31.1233
# American Institute of Mathematical Sciences December  2011, 31(4): 1233-1248. doi: 10.3934/dcds.2011.31.1233 ## A variational approach to semilinear elliptic equations with measure data 1 Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore, Via dei Musei 41 - 25121 Brescia, Italy 2 Dipartime...
2019-06-20T17:05:22
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https://www.heyiamindians.com/how-do-you-calculate-the-wavelength/
## How do you calculate the wavelength? The wavelength is calculated from the wave speed and frequency by λ = wave speed/frequency, or λ = v / f. How do you find the wavelength on a calculator? How to calculate wavelength 1. Determine the frequency of the wave. For example, f = 10 MHz . 2. Choose the velocity of th...
2023-04-02T00:35:08
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https://dsp.stackexchange.com/questions/59537/sampling-rate-issue-in-microcontroller
# Sampling rate issue in microcontroller • I am using a 3-axis LIS2D12H accelerometer interfaced with NRF51832 through the SPI interface. 1. The sensor has a sampling-rate from 1 Hz to 5.376 KHz which is happening at sensor only. 2. I am taking sensor data at 400 Hz by setting register values in the sensor. 3. I am...
2021-07-24T13:59:03
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https://cvgmt.sns.it/paper/3356/
# On the measure and the structure of the free boundary of the lower dimensional obstacle problem created by focardi on 06 Mar 2017 modified on 17 Dec 2018 [BibTeX] Published Paper Inserted: 6 mar 2017 Last Updated: 17 dec 2018 Journal: Archive for Rational Mechanics and Analysis Volume: 230 Pages: 125--184 Year: ...
2021-02-24T21:19:59
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https://zxi.mytechroad.com/blog/greedy/leetcode-1775-equal-sum-arrays-with-minimum-number-of-operations/
You are given two arrays of integers nums1 and nums2, possibly of different lengths. The values in the arrays are between 1 and 6, inclusive. In one operation, you can change any integer’s value in any of the arrays to any value between 1 and 6, inclusive. Return the minimum number of operations required to make the ...
2021-04-15T05:13:44
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https://lscsoft.docs.ligo.org/ligo.skymap/ligo/skymap/bayestar/ez_emcee.html
# Fire-and-Forget MCMC Sampling (ligo.skymap.bayestar.ez_emcee)¶ ligo.skymap.bayestar.ez_emcee.ez_emcee(log_prob_fn, lo, hi, nindep=200, ntemps=10, nwalkers=None, nburnin=500, args=(), kwargs={}, **options)[source] Fire-and-forget MCMC sampling using ptemcee.Sampler, featuring automated convergence monitoring, progre...
2019-08-21T09:44:40
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https://eprint.iacr.org/2022/276
### Hardness estimates of the Code Equivalence Problem in the Rank Metric Krijn Reijnders, Simona Samardjiska, and Monika Trimoska ##### Abstract In this paper, we analyze the hardness of the Matrix Code Equivalence (MCE) problem for matrix codes endowed with the rank metric, and provide the first algorithms for sol...
2022-06-27T03:13:39
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http://math.tntech.edu/ISR/Introduction_to_Probability/Distributions_of_Functions/thispage/newnode11.html
## Sum of independent random variables Let and be independent random variables having the respective probability density functions and . Then the cumulative distribution function of the random variable can be given as follows. where is the cdf of . By differentiating , we can obtain the pdf of as The form of integra...
2014-09-30T19:52:07
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http://tex.stackexchange.com/questions/95561/definition-dependent-on-font-size
# Definition dependent on font size I would like to define an arrow similar to here. The definition should scale with the font size. At the moment, my definition looks like: \documentclass[12pt]{article} \usepackage{amsmath} \usepackage{tikz} \usetikzlibrary{calc,decorations.pathmorphing,shapes} \newcounter{sarrow} ...
2013-05-21T07:00:37
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http://hal.in2p3.fr/view_by_stamp.php?label=LAPP&langue=en&action_todo=view&id=in2p3-00010492&version=1
772 articles – 2891 references  [version française] HAL: in2p3-00010492, version 1 Annales de Physique 1 (1976) 5-72 A study of the reaction $pp \rightarrow p(n \pi^+)$ at the Cern intersecting storage rings (1976) Subject(s) : Physics/High Energy Physics - Experiment in2p3-00010492, version 1 http://hal.in2p3.fr...
2013-12-11T13:58:22
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https://vbn.aau.dk/en/publications/a-note-on-secure-multiparty-computation-via-higher-residue-symbol
# A note on secure multiparty computation via higher residue symbols Ignacio Cascudo, Reto Alexander Schnyder* *Corresponding author Research output: Contribution to journalJournal articleResearchpeer-review ## Abstract We generalize a protocol by Yu for comparing two integers with relatively small difference in a...
2021-05-11T23:35:47
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https://supportmymoto.com/what-is-4-percent-of-14000/
# What is 4 percent of 14000? WRITTEN BY: supportmymoto.com STAFF #### Resolution for What’s 4 % of 14000: 4 % *14000 = ( 4:100)*14000 = ( 4*14000):100 = 56000:100 = 560 Now we’ve: 4 % of 14000 = 560 Query: What’s 4 % of 14000? Share resolution with steps: Step 1: Our output worth is 14000. Step 2: We signif...
2022-05-19T08:11:27
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http://quantum.lanl.gov/qlunch/2008_qlunch/smerzi.shtml
## CONTACTS • Coordinator Diego Dalvit • Quantum Lunch Location: T-Division Conference Room, TA-3, Building 123, Room 121 # Quantum Institute: Visitor Schedule The Quantum Lunch is regularly held on Thursdays in the Theoretical Division Conference Room, TA-3, Building 123, Room 121. Thursday, August 21, 2008 12:30 ...
2014-07-30T15:08:06
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https://www.tutorialspoint.com/find-the-perimeter-of-a-regular-hexagon-with-each-side-measuring-8-mathrm-m
# Find the perimeter of a regular hexagon with each side measuring $8 \mathrm{~m}$. #### Complete Python Prime Pack 9 Courses     2 eBooks #### Artificial Intelligence & Machine Learning Prime Pack 6 Courses     1 eBooks #### Java Prime Pack 9 Courses     2 eBooks Given: Each side of the given regular hexagon m...
2022-12-08T12:39:19
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https://gmatclub.com/forum/a-certain-population-of-bacteria-doubles-every-10-minutes-if-the-numb-189467.html
GMAT Question of the Day - Daily to your Mailbox; hard ones only It is currently 19 Feb 2019, 19:21 ### GMAT Club Daily Prep #### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email. Customize...
2019-02-20T03:21:38
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https://math.ecnu.edu.cn/RCFOA/seminar_template.php?id=762
Lifts of completely positive (equivariant) maps Eusebio Gardella  (Goteborgs Universitet) 16:00-17:00, November 15, 2021   Zoom Meeting 614 1453 0704 (Password: 132963) Abstract: Let $A$ and $B$ be $C^*$-algebras, $A$ separable and $I$ an ideal in $B$. We show that for any completely positive contractive linear map...
2022-05-25T23:13:20
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http://nrich.maths.org/5838&part=
### Whoosh A ball whooshes down a slide and hits another ball which flies off the slide horizontally as a projectile. How far does it go? ### Dam Busters 1 At what positions and speeds can the bomb be dropped to destroy the dam? ### Escape from Planet Earth How fast would you have to throw a ball upwards so that i...
2017-02-27T09:02:15
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https://www.gradesaver.com/textbooks/math/calculus/university-calculus-early-transcendentals-3rd-edition/chapter-2-section-2-4-one-sided-limits-exercises-page-85/49
## University Calculus: Early Transcendentals (3rd Edition) To prove the limit, prove that for every value of $\epsilon\gt0$, there exists a corresponding number of $\delta\gt0$ such that for all $x$: $$0-\delta\lt x\lt0\Rightarrow \Big|\frac{x}{|x|}-(-1)\Big|\lt\epsilon$$ $$\lim_{x\to0^-}\frac{x}{|x|}=-1$$ Given $\ep...
2021-05-08T13:48:40
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https://www.physicsforums.com/threads/gauss-jordan-elemination-method-stucked.263126/
# Gauss Jordan Elemination Method (Stucked) 1. Oct 9, 2008 ### farmd684 Gauss Jordan Elemination Method (Stucked)!! 1. The problem statement, all variables and given/known data 5x1+3x2+2x3=4 3x1+3x2+2x3=2 +x2+x3 =5 I have to solve this problem by calcutaing the inverse if this equation's augmented matrix 2. Releva...
2017-08-22T06:16:39
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http://mathhelpforum.com/differential-geometry/109391-density-q-r.html
# Thread: Density of Q in R 1. ## Density of Q in R How do I prove the following claim? "Given any $y\in\mathbb{R}$, there exists a sequence of rational numbers that converges to $y$" I'd assume, I would need to use the fact that Q is dense in R (not the topological version I'm trying to prove) and that, given any ...
2017-10-20T05:39:08
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http://www.physicsforums.com/showthread.php?t=548664
Working out the units? by tommyboo Tags: units, working P: 10 I am having a problem finding the correct SI unitsfor the quantity A? In the equation A=√(R/TY) That is A equals the square root of R divided by TY (not to good showing workings on the computer sorry) , the SI units of the quantity R are kg m^3 s^–2, the S...
2014-07-29T12:54:16
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https://cstheory.stackexchange.com/questions/25838/what-is-the-importance-of-linear-languages
# What is the importance of linear languages? What is the point of linear languages? They appear to be an intermediate set of languages in between regular and context-free languages, but do they have any useful or nice properties that either have been studied, or make them worthwhile to study? • What is a linear lang...
2022-08-08T18:39:01
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https://www.clutchprep.com/chemistry/practice-problems/140000/in-a-0-050-m-solution-of-a-weak-monoprotic-acid-h-1-8-x-10-3-what-is-its-ka-a-3-
# Problem: In a 0.050 M solution of a weak monoprotic acid, [H+] = 1.8 x 10-3. What is its Ka?A. 3.6 x 10-2B. 9.0 x 10-5C. 6.7 x 10-5D. 1.6 x 10-7 ###### FREE Expert Solution Remember that weak acids partially dissociate in water and that acids donate H+ to the base (water in this case). The dissociation of a weak a...
2021-01-22T22:37:36
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http://mathhelpforum.com/number-theory/115762-prove-contradiction-print.html
• Nov 20th 2009, 08:49 AM hebby Prove by contradiction that 2^(1/3) is irrational. a^2= 2^(2/3) then 2^(2/3)= M^2 because we assume a is rational N^2 then what do I do • Nov 20th 2009, 08:57 AM aman_cc Quote: Originally Posted by hebby Prove by contradiction that 2^(1/3) is irrational. a^2= 2^(2/3) then 2^(2/3)= M...
2017-04-25T17:14:19
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https://jpmccarthymaths.com/2020/04/23/almost-all-trees-have-quantum-symmetry/
Some notes on this paper. ### 1. Introduction and Main Results A tree has no symmetry if its automorphism group is trivial. Erdos and Rényi showed that the probability that a random tree on $n$ vertices has no symmetry goes to zero as $n\rightarrow \infty$. Banica (after Bichon) wrote down with clarity the quantum a...
2020-10-23T05:09:37
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https://forum.effectivealtruism.org/tag/risk-aversion
# Risk aversion An option is more risky if the value of its possible outcomes is more widely dispersed (higher variance). An agent is risk averse in a pure sense if they prefer safe options over risky ones, even when the riskier options (gambles) would give more of what they value in expectation. (Conversely, an agent...
2021-05-17T12:39:49
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https://gsverhoeven.github.io/post/posterior-distribution-average-treatment-effect/
# Using posterior predictive distributions to get the Average Treatment Effect (ATE) with uncertainty ## Gertjan Verhoeven & Misja Mikkers Here we show how to use Stan with the brms R-package to calculate the posterior predictive distribution of a covariate-adjusted average treatment effect. We fit a model on simulat...
2023-03-22T04:15:09
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https://asmedigitalcollection.asme.org/ebooks/book/140/chapter-abstract/26872/Application-of-Modified-Adaptive-Tabu-Search-to?redirectedFrom=fulltext
Skip Nav Destination ASME Press Select Proceedings # International Conference on Computer and Electrical Engineering 4th (ICCEE 2011) By Jianhong Zhou Jianhong Zhou Search for other works by this author on: ISBN: 9780791859841 No. of Pages: 698 Publisher: ASME Press Publication date: 2011 This paper presents an appl...
2021-04-19T14:52:31
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http://lmfa.ec-lyon.fr/spip.php?article1721&lang=fr
Laboratoire de Mécanique des Fluides et d’Acoustique - UMR 5509 LMFA - UMR 5509 Laboratoire de Mécanique des Fluides et d’Acoustique Lyon France Nos partenaires Article dans J. Non-Newtonian Fluid Mech. (2020) Mixing of non-Newtonian inelastic fluid in a turbulent patch of T-junction Haining Luo, Alexandre Delache...
2020-09-27T22:14:37
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http://molinajosue.blogspot.com/2016/09/post-prelims-new-beginning-pt-1.html
Here's fresh, new math—stuff I've never posted about. It's a bit of measure theory—an indispensable generalization of the notion of "length", "area", "volume", etc., which will later on allow us to extend the Riemann integral to the Lebesgue integral (and thus take our calculus to the "next level", if I may). Real-worl...
2019-01-18T07:27:30
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https://math.stackexchange.com/questions/2088791/develop-fz-dfrac1z1z-into-a-laurent-series-for-the-region-0-z
# Develop $f(z) = \dfrac{1}{z(1+z)}$ into a Laurent series for the region $0< |z| < 1$ Here is the solution to the problem (I need some clarification): After partial fraction decomposition we have $\dfrac{1}{z(1+z)} = \dfrac{1}{z} - \dfrac{1}{1+z}$ But since we're only interested by the region $0< |z| < 1$, we can r...
2019-07-24T01:13:40
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https://physicshelpforum.com/threads/fractal-universe-5d-space-time-frequency-of-cycles-in-dimensional-scale.15673/page-3
# Fractal Universe - 5D Space-Time: Frequency Of Cycles In Dimensional Scale Status Not open for further replies. #### topsquark Forum Staff "The special-relativistic thermodynamics is an interesting area which has not been settled to full satisfaction AFAIK but nonetheless, it should be pointed out that when you he...
2020-02-18T11:11:45
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https://en.wikipedia.org/wiki/Bitangents_of_a_quartic
# Bitangents of a quartic The Trott curve and seven of its bitangents. The others are symmetric with respect to 90° rotations through the origin. The Trott curve with all 28 bitangents. In real algebraic geometry, a general quartic plane curve has 28 bitangent lines, lines that are tangent to the curve in two places....
2017-03-26T13:24:53
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https://renukusabuzuju.stcroixcaribbeanweddings.com/estimating-transformations-for-regression-book-7471ei.php
Last edited by Voodoogis Monday, July 27, 2020 | History 2 edition of Estimating transformations for regression found in the catalog. Estimating transformations for regression Robert Tibshirani # Estimating transformations for regression ## by Robert Tibshirani Written in English Subjects: • Mathematical optimiz...
2021-02-26T16:25:27
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https://discretize.simpeg.xyz/en/main/api/generated/discretize.TreeMesh.average_node_to_cell.html
# discretize.TreeMesh.average_node_to_cell# TreeMesh.average_node_to_cell# Averaging operator from nodes to cell centers (scalar quantities). This property constructs a 2nd order averaging operator that maps scalar quantities from nodes to cell centers. This averaging operator is used when a discrete scalar quantity...
2022-05-18T17:05:38
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http://mathhelpforum.com/new-users/209702-need-help-how-do-i-do.html
# Thread: Need help!!! how do i do it!! 1. ## Need help!!! how do i do it!! A modern sculpture in a park contains a parabolic arc that starts at the ground and reaches a maximum height of 10 feet after a horizontal distance of 4 feet. Write a quadratic function (vertex form) that describes the shape of the outside ar...
2018-06-20T19:54:47
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https://math.stackexchange.com/questions/3396882/proving-expectation-to-be-infinite-with-an-inequality
# Proving expectation to be infinite with an inequality Let $$X$$ be a non-negative random variable, and suppose that $$P(X \geq n) \geq 1/n$$ for each $$n \in \mathbb{N}$$. Prove that $$E(X) = \infty$$. I have been stuck with this problem for a few days now. I guess it can make some sense intuitively because you hav...
2019-11-20T14:28:23
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http://mathhelpforum.com/differential-geometry/78040-sequences.html
Math Help - Sequences 1. Sequences Need help proving.... Suppose that (an), (bn), and (cn) are sequences such that an≤ bn ≤ cn for all n ɛ N and such that lim an = lim cn = b. Prove that lim bn = b. 2. Originally Posted by Chief65 Need help proving.... Suppose that (an), (bn), and (cn) are sequences such that an≤ bn...
2014-09-01T19:28:05
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https://tairgalili.com/2020/11/06/pigeonhole-principle/
# Pigeonhole principle Imagine that you are a pigeon owner, and let’s say that you have 10 pigeons. however, there is a problem – you have 9 pigenholes. How can you fit all the pigeons to different pigenholes? That’s right – you cant! You don’t have to be a mathematician in order to understand the situation. It is so...
2023-01-30T01:12:06
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https://www.cs.utexas.edu/users/flame/laff/alaff/chapter10-Givens-rotations.html
## Unit10.3.2Givens' rotations We now introduce another important class of orthogonal matrices known as Givens' rotations. Actually, we have seen these before, in Subsubsection 2.2.5.1, where we simply called them rotations. It is how they are used that makes then Givens' rotations. Given a vector $x = \left( \begin{...
2021-05-09T04:33:15
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https://electronics.stackexchange.com/questions/321886/interference-between-signals-having-ofdm-and-dsss-modulations
# Interference between signals having OFDM and DSSS modulations If there are two signals, one having OFDM modulation and other one having DSSS modulation occupying the same bandwidth and over the same part of spectrum, will i be able to demodulate both signals correctly? Asking this question because it is said that DS...
2019-10-21T00:29:38
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https://www.luogu.com.cn/problem/P3527
# [POI2011]MET-Meteors ## 题意翻译 Byteotian Interstellar Union 有 $n​$ 个成员国。现在它发现了一颗新的星球,这颗星球的轨道被分为 $m​$ 份(第 $m​$ 份和第 $1​$ 份相邻),第 $i​$ 份上有第 $a_i​$ 个国家的太空站。 这个星球经常会下陨石雨。BIU 已经预测了接下来 $k$ 场陨石雨的情况。 BIU 的第 $i$ 个成员国希望能够收集 $p_i$ 单位的陨石样本。你的任务是判断对于每个国家,它需要在第几次陨石雨之后,才能收集足够的陨石。 #### 输入格式 第一行是两个数 $n,m$。 第二行有 $m$ 个数,第 $i$ 个数 $o_i$ 表示...
2020-05-28T14:50:15
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http://mkweb.bcgsc.ca/pi/piday/methods.mhtml
Where am I supposed to go? Where was I supposed to know?get lost in questionsmore quotes # numbers: worthwhile PNAS Cover: Earth BioGenome Project # visualization + design The 2022 Pi Day art is a music album “three one four: a number of notes” . It tells stories from the very beginning (314…) to the very (known) e...
2022-05-23T17:41:32
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https://www.michaelstraka.com/
## Recursive Zero-Knowledge Proofs: A Comprehensive Primer Recently, there have been a number of exciting results concerning proof recursion. A sketch for Halo has suggested the possibility of proof recursion without a costly trusted setup, while Fractal has demonstrated the first instantiation of proof composition wh...
2021-05-07T06:14:19
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http://math.stackexchange.com/questions/202624/what-does-the-notation-fa-x-mean/202625
# What does the notation $|f(A)| = X$ mean? $A$ is a set and so is $B$. $f$ is a function $A \to B$. I have a math question that asks about $|f(A)|$. What does the notation $|\cdot |$ mean? - If the elements of $B$ are sets, then the double bars could mean cardinality (i.e. the size of the set). If $B$ is a set of...
2016-05-04T08:28:08
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https://jp.maplesoft.com/support/help/view.aspx?path=ListTools/DotProduct&L=J
DotProduct - Maple Help ListTools DotProduct compute the dot product of two lists Calling Sequence DotProduct(L1, L2) Parameters L1, L2 - lists Description • The DotProduct(L1, L2) calling sequence computes the real dot product of two lists, L1 and L2, where both lists have equal length. • To find the inne...
2022-09-27T11:14:57
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http://www.ck12.org/geometry/Supplementary-Angles/lesson/Supplementary-Angles-Intermediate/r9/
<meta http-equiv="refresh" content="1; url=/nojavascript/"> You are viewing an older version of this Concept. Go to the latest version. # Supplementary Angles % Progress Practice Supplementary Angles Progress % Supplementary Angles What if you were given two supplementary angles? How would you determine their angle ...
2015-03-03T16:44:34
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https://www.gradesaver.com/textbooks/math/differential-equations-linear-algebra/linear-algebra-a-modern-introduction/chapter-2-systems-of-linear-equations-2-1-introduction-to-systems-of-linear-equations-exercises-2-1-page-63/11
## Linear Algebra: A Modern Introduction $$\begin{bmatrix} 1 & 0 \\ 0 & 1 \\ 0 & 0 \\ \end{bmatrix}$$ Given this matrix: $$\begin{bmatrix} 3 & 5 \\ 5 & -2 \\ 2 & 4 \\ \end{bmatrix}$$ First, subtract the first row from the second: $$\begin{bmatrix} 3 & 5 \\ 2 & -7 \\ 2 & 4 \\ \end{bmatrix}$$ Then third from the second,...
2018-11-12T22:52:42
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http://motls.blogspot.com/2012/06/why-matrix-theory-contains-membranes.html
## Thursday, June 07, 2012 ... ///// ### Why M(atrix) theory contains membranes A week ago, I wrote a long article on Matrix theory. I planned a few shorter additions and this is the first one. M-theory may stand for "mother", "magic", "mystery", "matrix", upside down "W" for "Witten" (this interpretation was discov...
2017-04-23T23:38:37
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https://experts.mcmaster.ca/display/publication1495485
# HOL Light QE Academic Article • • Overview • • Research • • Additional Document Info • • View All • ### abstract • We are interested in algorithms that manipulate mathematical expressions in mathematically meaningful ways. Expressions are syntactic, but most logics do not allow one to discuss syntax. ${\rm CTT}_{\...
2019-06-24T15:33:35
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https://www.esaral.com/q/find-all-points-of-discontinuity-of-f-where-f-is-defined-by-35326
Find all points of discontinuity of f, where f is defined by Question: Find all points of discontinuity of f, where f is defined by $f(x)=\left\{\begin{array}{l}\frac{|x|}{x} \text { if } x \neq 0 \\ 0, \text { if } x=0\end{array}\right.$ Solution: The given function $f$ is $f(x)=\left\{\begin{array}{l}\frac{|x|}{...
2023-03-28T20:44:20
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https://math.stackexchange.com/questions/3618240/generate-all-nonisomorphic-rooted-trees-from-a-vertex-set-with-a-common-root
# Generate all nonisomorphic rooted trees from a vertex set with a common root For a vertex set $$v = \left\{v_1...v_n \right\}$$ and a common root $$r$$, is there an efficient (maybe $$O(1)$$ per tree) algorithm that generates all non-isomorphic trees on all nodes $$v$$ and with root $$r$$. Two trees are isomorphic ...
2020-09-18T11:54:26
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https://community.plu.edu/~sklarjk/fsaa/section-23.html
# Section7.2Introduction to cosets and normal subgroups ##### Definition7.2.1 Given a group $G$ with subgroup $H\text{,}$ we define $\siml$ on $G$ by \begin{equation*} a\siml b \text{ if and only if } a^{-1}b\in H \end{equation*} and $\simr$ on $G$ by \begin{equation*} a\simr b \text{ if and only if } ab^{-1}\in H...
2021-04-12T00:30:54
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https://datascience.stackexchange.com/questions/104543/how-to-revert-np-logdata-and-data-diff
# How to revert np.log(data) and data.diff()? I have used np.log(data) and then applied data.diff() to transform my data in timeseries model. I have the predictions. How do I convert it back to normal scale? Here is an example for your reference: -------------------------------------------------------------------- |...
2022-01-24T01:38:03
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https://physics.stackexchange.com/questions/217325/can-the-surface-charge-density-be-negative-somewhere-on-the-inner-surface-of-a-s
# Can the surface charge density be negative somewhere on the inner surface of a spherical conductor shell? A positive charge $q$ is located off-centre inside a conducting spherical shell. We know that the total charge on the inner surface of the shell is $-q$. Is the surface charge density negative over the entire in...
2020-10-23T21:01:39
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http://mathoverflow.net/questions/103147/a-strange-question-about-closed-geodesics-on-a-closed-manifold
MathOverflow will be down for maintenance for approximately 3 hours, starting Monday evening (06/24/2013) at approximately 9:00 PM Eastern time (UTC-4). ## A strange question about closed geodesics on a closed manifold I'm studying a particular kind of curve evolution on Riemannian manifolds. It would help me to know...
2013-06-19T22:40:09
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https://quant.stackexchange.com/questions/42960/does-the-asian-option-average-option-depend-on-the-forward-implied-vol
# Does the Asian Option (average Option) depend on the forward implied vol I can easily understand that the forward starting Option and Barrier Option depend on the forward implied vol smile at resetting date, so we always choose the stochastic vol model for underlying to control the forward vol. Does the Asian Optio...
2019-05-20T08:27:59
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https://www.adamnsmith.com/MSIN0010/sampling-distributions-and-the-clt.html
# Chapter 3 Sampling Distributions and the CLT Sampling distributions are theoretical objects that represent the probability distribution of a statistic (usually the sample mean). The sampling distribution of the sample mean is the distribution of means that result from taking all possible samples of size $$n$$ from ...
2020-05-25T05:48:27
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https://mathhothouse.me/2014/08/18/polynomials-commuting-cubics-and-quartics/
## Polynomials — commuting and cubics Let us start delving deeper in Algebra. But, I will be providing only an outline to you in the present article. I encourage you to fill in the  details. This is a well-known way to develop mathematical aptitude/thinking. (This method of  learning works even in Physics and esoteric...
2021-07-26T17:22:02
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https://www.physicsforums.com/threads/chain-rule.294135/
Chain rule -EquinoX- 1. The problem statement, all variables and given/known data Find $$\frac{\partial z}{\partial u}$$ and $$\frac{\partial z}{\partial v}$$ using the chain rule. $$z = \arctan(\frac{x}{y}) , x=u^2+v^2 , y=u^2-v^2$$ 2. Relevant equations 3. The attempt at a solution $$\frac{\partial z}{\partial ...
2019-03-26T00:43:41
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https://wikimho.com/us/q/security/48022
### What kinds of encryption are _not_ breakable via Quantum Computers? • There's the recent article NSA seeks to build quantum computer that could crack most types of encryption. Now I'm not surprised by the NSA trying anything1, but what slightly baffles me is the word "most" - so, what encryption algorithms are kno...
2021-12-03T06:48:28
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https://zbmath.org/?q=an:0575.30019
# zbMATH — the first resource for mathematics ##### Examples Geometry Search for the term Geometry in any field. Queries are case-independent. Funct* Wildcard queries are specified by * (e.g. functions, functorial, etc.). Otherwise the search is exact. "Topological group" Phrases (multi-words) should be set in "strai...
2016-04-29T23:38:41
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http://onlinetvsoftware.net/bit-error/bit-error-rate-of-bpsk.php
Home > Bit Error > Bit Error Rate Of Bpsk # Bit Error Rate Of Bpsk ## Contents The average symbol SNR s = 5A square / 2. Please help me out. If, for example, your simulation computes a symbol error rate (SER), convert the SER to a BER before using the simulation with BERTool.The following sections describe the Bit E...
2018-05-26T21:35:18
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https://forum.allaboutcircuits.com/threads/equivalent-resistance.93351/
# Equivalent Resistance Discussion in 'Homework Help' started by zyzxzwzvz, Jan 11, 2014. 1. ### zyzxzwzvz Thread Starter New Member Jan 11, 2014 3 0 I made up this problem, and I have been thinking about it for a few days, but I do not know if it has a solution. Looking at other posts, this problem seems more mathe...
2017-02-27T15:49:44
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https://zbmath.org/?q=an:0781.14010
# zbMATH — the first resource for mathematics $$p$$-adic uniformization of Shimura curves: the theorems of Cherednik and Drinfeld. (Uniformisation $$p$$-adique des courbes de Shimura: Les théorèmes de Čerednik et de Drinfeld.) (French) Zbl 0781.14010 Courbes modulaires et courbes de Shimura, C. R. Sémin., Orsay/Fr. 19...
2021-05-13T20:08:21
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https://chemistry.stackexchange.com/questions/46469/what-should-be-the-name-of-this-substituted-cyclopentane
# What should be the name of this substituted cyclopentane? I think its name is 5-amino-3-bromo-4-chloro-2-hydroxycyclopentan-1-carbonitrile. Is that correct? • What should I do wait please sir .. Feb 17 '16 at 18:48 • @_Pi5 what do YOU see in your browser? Try uploading again, after checking your picture locally. If...
2021-09-21T17:10:24
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https://leetcode.ca/2022-01-27-2135-Count-Words-Obtained-After-Adding-a-Letter/
Formatted question description: https://leetcode.ca/all/2135.html # 2135. Count Words Obtained After Adding a Letter • Difficulty: Medium. • Related Topics: Array, Hash Table, String, Bit Manipulation, Sorting. • Similar Questions: Strings Differ by One Character, Count Substrings That Differ by One Character, Maximu...
2022-10-07T09:20:18
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http://cvgmt.sns.it/paper/3034/
# A piecewise Korn inequality in $SBD$ and applications to embedding and density results created by friedrich on 06 May 2016 [BibTeX] Preprint Inserted: 6 may 2016 Last Updated: 6 may 2016 Year: 2016 Abstract: We present a piecewise Korn inequality for generalized special functions of bounded deformation ($GSBD^...
2019-05-20T22:27:51
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https://www.samuelchukwuemeka.com/IntegralCalculus/integration.html
If there is one prayer that you should pray/sing every day and every hour, it is the LORD's prayer (Our FATHER in Heaven prayer) It is the most powerful prayer. A pure heart, a clean mind, and a clear conscience is necessary for it. - Samuel Dominic Chukwuemeka For in GOD we live, and move, and have our being. - Acts ...
2021-02-25T22:33:02
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https://stats.stackexchange.com/questions/175056/does-scaling-of-the-ordinal-variables-make-sense-before-pca
# Does scaling of the ordinal variables make sense before PCA? I have some data with 200+ variables/columns (30% numerical, 30% Likert 1-5 scale and 40% Likert 1-10 scale). I want to do principal component analysis (PCA) in R. I think I should scale the data before calling psych::principal. My questions: 1. Is it co...
2019-12-10T16:12:59
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https://www.askiitians.com/forums/Mechanics/a-liquid-is-kept-in-a-vessel-of-cylindrical-size-w_193301.htm
Click to Chat 1800-1023-196 +91-120-4616500 CART 0 • 0 MY CART (5) Use Coupon: CART20 and get 20% off on all online Study Material ITEM DETAILS MRP DISCOUNT FINAL PRICE Total Price: Rs. There are no items in this cart. Continue Shopping A liquid is kept in a  vessel of cylindrical size which is rotating...
2019-04-18T22:40:13
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https://byjus.com/diffraction-grating-formula/
# Diffraction Grating Formula A diffraction grating defines an optical component with a periodic structure which splits the light into various beams that travel in different directions. It is an alternative way to observe spectra other than a prism. Generally, when light is incident on the grating, the split light wil...
2020-08-14T11:39:04
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https://gmatclub.com/forum/if-a-fair-6-sided-die-is-rolled-three-times-what-is-the-probability-t-208141.html
GMAT Question of the Day - Daily to your Mailbox; hard ones only It is currently 21 Jul 2018, 02:43 ### GMAT Club Daily Prep #### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email. Customize...
2018-07-21T09:43:31
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http://math.stackexchange.com/questions/3698/why-doesnt-0-being-a-prime-ideal-in-mathbb-z-imply-that-0-is-a-prime-num
# Why doesn't $0$ being a prime ideal in $\mathbb Z$ imply that $0$ is a prime number? I know that $1$ is not a prime number because $1\cdot\mathbb Z=\mathbb Z$ is, by convention, not a prime ideal in the ring $\mathbb Z$. However, since $\mathbb Z$ is a domain, $0\cdot\mathbb Z=0$ is a prime ideal in $\mathbb Z$. Is...
2016-05-26T00:49:30
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http://clay6.com/qa/50800/the-degree-of-dissociation-of-a-weak-electrolyte-is-given-by
Browse Questions # The degree of dissociation of a weak electrolyte is given by $\begin{array}{1 1}\alpha=\Lambda_c/\Lambda^{\infty}\\\alpha=\Lambda^{\infty}/\Lambda_c\\\alpha=\Lambda^2_c/\Lambda^{\infty}\\\alpha=\Lambda_c\Lambda^{\infty}\end{array}$ Can you answer this question? Answer : $\alpha=\Lambda_c/\Lambda^...
2016-10-22T19:41:46
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https://blog.myrank.co.in/pair-of-straight-lines-homogeneous-second-degree-equation/
# Pair of Straight Lines – Homogeneous Second Degree Equation ## Pair of Straight Lines – Homogeneous Second Degree Equation An equation (whose RHS is zero) in which the sum of the power of x and y in every term is the same say n, is called a Homogeneous equation of nth degree in x and y. Thus, ax² + 2hxy + by² = 0 ...
2023-02-08T17:29:25
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http://math.stackexchange.com/questions/99949/if-xy-is-a-unit-are-x-and-y-units/99950
# If $xy$ is a unit, are $x$ and $y$ units? I know if $x$ and $y$ are units, in say a commutative ring, then $xy$ is a unit with $(xy)^{-1}=y^{-1}x^{-1}$. But if $xy$ is a unit, does it necessarily follow that $x$ and $y$ are units? - How do you define unit? –  Andres Caicedo Jan 17 '12 at 21:54 @AndresCaicedo I def...
2015-07-01T05:38:28
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http://mathoverflow.net/questions/129397/rigid-strongly-regular-graphs
# Rigid Strongly Regular Graphs I need a few examples of graphs that are strongly regular as well as rigid, i.e., have only the trivial automorphism. Any references to relevant literature would be appreciated. Thanks. - At Ted Spence's web page http://www.maths.gla.ac.uk/~es/srgraphs.php you can find all the strongl...
2014-09-23T00:32:33
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https://fabricesalvaire.github.io/Patro/api/Patro/GeometryEngine/Polygon.html
# 10.1.4.8. Polygon¶ Module to implement polygon and convex hull. For resources on polygon see this section. class Patro.GeometryEngine.Polygon.Polygon2D(*points, is_convex=None, is_clockwise=None)[source] Class to implements 2D Polygon. __init__(*points, is_convex=None, is_clockwise=None)[source] Initialize self...
2019-04-18T13:32:41
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https://cs.stackexchange.com/tags/terminology/hot?filter=year
A message from our CEO about the future of Stack Overflow and Stack Exchange. Read now. # Tag Info ## Hot answers tagged terminology 30 In the most general sense, a key is a piece of information required to retrieve some data. However, this meaning plays out differently depending on exactly what situation you're de...
2020-01-23T09:44:18
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https://www.gradesaver.com/textbooks/math/algebra/elementary-algebra/chapter-5-exponents-and-polynomials-5-4-dividing-by-monomials-problem-set-5-4-page-212/47
# Chapter 5 - Exponents and Polynomials - 5.4 - Dividing by Monomials - Problem Set 5.4: 47 -3$a^{2}$ + 7a + 13b #### Work Step by Step $\frac{15a^{3}b - 35a^{2}b - 65ab^{2}}{-5ab}$ = RECALL: $\frac{b^{n}}{b^{m}}$ = $b^{n-m}$ So, $\frac{15a^{3}b - 35a^{2}b - 65ab^{2}}{-5ab}$ = $\frac{15a^{3}b}{-5ab}$ + $\frac{-35a^{...
2018-05-23T20:56:48
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https://www.mpi-inf.mpg.de/departments/algorithms-complexity/publications/current-year/
# Current Year [1] A. Abboud, K. Bringmann, D. Hermelin, and D. Shabtay, “SETH-Based Lower Bounds for Subset Sum and Bicriteria Path,” 2017. [Online]. Available: http://arxiv.org/abs/1704.04546. (arXiv: 1704.04546) Abstract Subset-Sum and k-SAT are two of the most extensively studied problems in computer science, and ...
2017-12-12T06:37:16
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