text stringlengths 100 957k | meta stringclasses 1
value |
|---|---|
Title Dimerization constant of $SF_{6}$ and $CF_{4}$ in cryosolutions Author Dobrotvorskaia, A.N. Shchepkin, D.N. Sergeev, P.K. Herrebout, W.A. van der Veken, B.J. Faculty/Department Faculty of Sciences. Chemistry Publication type article Publication 2011 Amsterdam , 2011 Subject Physics Chemistry Source (journal) Chem... | {} |
## Algebra and Trigonometry 10th Edition
$g(x)=(x+3)^2+2$ has no inverse function.
It is possible to draw a horizontal line that intersects $g(x)$ in two points. For example: $y=8$ | {} |
# pymatgen.vis.plotters module¶
class SpectrumPlotter(xshift=0.0, yshift=0.0, stack=False, color_cycle=('qualitative', 'Set1_9'))[source]
Bases: object
Class for plotting Spectrum objects and subclasses. Note that the interface is extremely flexible given that there are many different ways in which people want to vi... | {} |
# Re: [isabelle] sublocale problem
Dear Esseger,
1. Interpretations can be given name prefixes to avoid clashes. For example,
interpretation prefix!: AAA M2 T2
2. Unfortunately, the sublocale command does not export the rule for showing the locale predicate of superlocales. Consequently, I recommend to first prove ... | {} |
# Is there a way to do an “upside down” \widehat?
I've come across this in a book I'm looking through, but I can't find the code for it. I want it to look exactly like the \widehat and go above text like \widehat does...I just want it to be (vertically) flipped!
-
...and you're not referring to \v{a}, right? – Werner... | {} |
## How do you interpret variation?
A variance of zero indicates that all of the data values are identical. All non-zero variances are positive. A small variance indicates that the data points tend to be very close to the mean, and to each other. A high variance indicates that the data points are very spread out from t... | {} |
## Trigonometry (11th Edition) Clone
To produce voltage $E=0$, it takes at least 2 seconds.
$$E=20\sin(\frac{\pi t}{4}-\frac{\pi}{2})$$ Since $t$ is time in seconds, the range of $t$ is $[0,\pi)$ For $E=0$, we get the equation $$20\sin(\frac{\pi t}{4}-\frac{\pi}{2})=0$$ $$\sin(\frac{\pi t}{4}-\frac{\pi}{2})=0$$ For $\... | {} |
# I have discovered a formula for PI(x)
1. ### eljose
501
Let be PI(x) the prime number counting function ,i have discovered an integral representation for it the integral is on CxCxR space with bounds
(c-i8,c+i8)x(0,8)x(c-i8,c+i8) where 8=infinite
I have submitted to several webpages but i always have been rejecte... | {} |
C1-STABLE INVERSE SHADOWING CHAIN COMPONENTS FOR GENERIC DIFFEOMORPHISMS
Title & Authors
C1-STABLE INVERSE SHADOWING CHAIN COMPONENTS FOR GENERIC DIFFEOMORPHISMS
Lee, Man-Seob;
Abstract
Let f be a diffeomorphism of a compact $\small{C^{\infty}}$ manifold, and let p be a hyperbolic periodic point of f. In this paper w... | {} |
# Suggestion to mass-replace links to http://math.uga.edu/~pete
Links to various files starting with http://math.uga.edu/~pete and http://www.math.uga.edu/~pete no longer work, but they can be fixed by changing the start to http://alpha.math.uga.edu/~pete. Here are a few examples of such edits done manually: one, two,... | {} |
# Why is plain-hash-then-encrypt not a secure MAC?
It seems that even in MAC-then-encrypt systems like SSL, something like HMAC is used rather than a plain hash. Why?
Suppose we use some stream cipher; then why can't we use $Encrypt(m | H(m))$ as the MAC-then-encrypted version of the message? Assuming no bad relation... | {} |
# Atomic and Molecular Physics (PHYS*4120)
Code and section: PHYS*4120*01
Term: Fall 2009
Instructor: Robert Brooks
## Course Information
### Objectives
The student will learn to apply the principles of quantum mechanics to a variety of situations in atomic and molecular physics, mostly of bound states (structure... | {} |
How can we treat heavy metals in rivers and streams?
Aug 31, 2016
Chemicals can be used to treat heavy metals.
Explanation:
Let me start with Metal (+2) (such as zinc) and Ca(OH)2 in water.
At the end of reaction,
Metal + Ca(OH)2 --> Me(OH)2 + $C {a}^{+ 2}$
Now you have solid form (of Me(OH)2).
You can also use... | {} |
# Is Beer-Lambert law also valid for fluorescence and luminescence?
When I measure optical density in a microplate reader the absorbance is proportional to the concentration and the height of the liquid. Is Beer-Lambert law also valid for fluorescence and luminescence?
Let's say I prepare a fluorescent solution and m... | {} |
## Stream: maths
### Topic: derived functors
#### Scott Morrison (Apr 29 2021 at 13:16):
I still have some moderate sorries to fill in, but I just got
def functor.left_derived (n : ℕ) (F : C ⥤ D) [F.additive] : C ⥤ D :=
projective_resolutions C ⋙ F.map_homotopy_category _ _ ⋙ homotopy_category.homology_functor D _ ... | {} |
# An elementary question about slice categories
I'm just beginning to dabble into some category theory (from Aluffi's Algebra) and I have some difficulty with morphisms in a slice category. Particularly, I can't see why the diagram of a morphism should commute in the ambient category. If we have the category $C_A$ and... | {} |
Enter the power, the mass, and the time into the calculator to determine the Acceleration from Power.
## Power to Acceleration Formula
The following equation is used to calculate the Power to Acceleration.
a = SQRT ( P/(2*m*t))
• Where a is the Power to Acceleration (m/s^2)
• P is the power (N-m)
• m is the mass (kg... | {} |
# Vertical-scrolling 2D platform game
I am working on a vertical-scrolling 2D platform game using GameplayKit, SpriteKit and I am writing it in Swift 2.0.
Today I have been working on a tiling-routine which repositions SKNode right after they have left the upper or lower screen-border. I am not spawning new SKNodes b... | {} |
# tcolorbox: sidebyside inner margins
When using sidebyside, the right part of the tcolorbox do not seem to honor the margins.
Consider:
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[most]{tcolorbox}
\usepackage{lipsum}
%\tcbuselibrary{skins}
\newtcolorbox{EmR}{%
sidebyside,sidebyside align=top,lo... | {} |
## 1.169
Particle 1 experiences a perfectly elastic collision with a stationary particle 2. Determine their mass ratio, if the particles fly apart symmetrically relative to the initial motion direction of particle 1 with the angle of divergence $$\theta = 60^{0}$$.
Solution 1:Lab Frame, use relative motion and momentu... | {} |
# Simple way to explain Sine theorem applications
what is the simplest way to explain how to determine whether the resolution of a triangle (finding all its sides and angles, given 3 of them) using the sine theorem gives one or two solutions and whether the solution found is correct? I have explained congruent triangl... | {} |
# Problem 3: Symmetrical Properties of Roots
Algebra Level 3
The roots of the quadratic equation $$x^2-(2k+4)x+(k^2+3k+2)=0$$ are non-zero and one root is twice the other. Calculate the value of $$k$$.
× | {} |
# Cheryl climbed a set of stairs and stopped at the middle step. She then walked down 2 steps, up 4 steps, down 3 steps, and up 5 steps, and she was at the top of the stairs. How many steps are in the set of stairs?
Jun 9, 2017
$9$ steps
#### Explanation:
We know that Cheryl was at the middle of the set of stairs. ... | {} |
Statics (smooth pin + tension)
• February 10th 2010, 04:53 PM
jegues
Statics (smooth pin + tension)
1. The problem statement, all variables and given/known data
See figure.
2. Relevant equations
sum Fx = 0
sum Fy = 0
sum M = 0
3. The attempt at a solution
See figure (written in my writing).
Are the tensions A and B... | {} |
# #StackBounty: #algorithms #graphs #shortest-path Finding a negative cycle in a bipartite graph
### Bounty: 50
The Bellman-Ford algorithm can be used to find a negative cycle in a general graph, in time $$O(|V||E|)$$. Is there a faster algorithm for finding a negative cycle in a bipartite directed graph, where the e... | {} |
Tutorials
python
# Introduction to Python IDLE
Learn what is Python IDLE (Integrated Development and Learning Environment) is, how you can install it, and leverage its various features for writing your Python programs.
If you are just getting started in Python and would like to learn more, take DataCamp's Introducti... | {} |
# String search algorithm on small alphabet
I am looking for an algorithm to search a substring in a string. I know there are a number of wellknown Algorithms like Knuth-Morris-Pratt, for instance, and I suppose most preimplemented functions use one of those. However, I remember a lecture, long ago, where the lecturer... | {} |
# blog
• ## Co-(Elgot Algebra)s in the Wild
I've been looking for an example of co-(Elgot algebra)s for quite some time, and I came across a surprisingly nice example while working on my gmpint package.
• ## Why Haskell Is Good
As many of you will know, Haskell is a non-strict language, with non-strictness implemen... | {} |
Faculties
DE / EN
## Dr. Philipp Warode
Research assistant
Fakultät II - Mathematik und Naturwissenschaften
Institut für Mathematik
Technische Universität Berlin
Straße des 17. Juni 136
10623 Berlin
Office: MA 505
Telephone: +49 30 314 25739
Email: (lastname)@math.tu-berlin.de
### Publications
• Parametric Comput... | {} |
## Species Diversity in Ecosystem For Educational Use
Species diversity is the effective number of different species that are represented in a collection of individuals (a dataset). This video talks about Species Diversity in Ecosystem For Educational Use. | {} |
The perimeter of five squares are 24 cm, 32 cm, 40 cm, 76 cm and 80 cm respectively. The perimeter of another square equal in area to sum of the ares of these squares is:
[A] 62 cm
[B] 124 cm
[C] 31 cm
[D] 961 cm
Show Answer
Advertisement
Kindly help us to keep GKToday updated and error free. Use this form to report... | {} |
## Monday, August 4, 2008
### Group theoretic underpinnings of zeta-phenomenology
This is a follow up to the posts of Alain and Katia on the Vanderbilt
workshop this past May. It was a really great conference and I would again like
to thank the organizers for including me.
After I returned from the conference, I dec... | {} |
# E.L. Reed Herbarium at TTU
Herbarium Prep Space Imaging Station
The EL Reed Herbarium at Texas Tech University houses over 20,000 recorded vascular plant collections from the South Plains, West Texas, and other regions. The Herbarium also contains an estimated 10,000 unrecorded specimens, including specimens untouc... | {} |
Converts a class vector (integers) to binary class matrix.
to_categorical(y, num_classes = NULL, dtype = "float32")
Arguments
y Class vector to be converted into a matrix (integers from 0 to num_classes). Total number of classes. The data type expected by the input, as a string
Value
A binary matrix representation... | {} |
# NLP for learners – Embed trained word vectors in the Embedding layer
In the previous article, we built a model that uses LSTM to predict the next one based on the five words.
However, as the text used for training becomes larger, the accuracy decreases dramatically. This is because each word is represented by a sin... | {} |
## 199. The manner in which $$\log x$$ tends to infinity with $$x$$.
It will be remembered that in Ex. XXXVI. 6 we defined certain different ways in which a function of $$x$$ may tend to infinity with $$x$$, distinguishing between functions which, when $$x$$ is large, are of the first, second, third, … orders of great... | {} |
# How do you write the equation in point slope form given slope of -1/3 and passing through the point (6, -4)?
##### 1 Answer
Mar 25, 2016
$x + 3 y + 6 = 0$
#### Explanation:
the equation in point slope form slope of $- \frac{1}{3}$ and passing through the point $\left(6 , - 4\right)$
By slope point form,
$\left(... | {} |
# How do you find the vertex and the intercepts for f(x)= -x^2-3x-6 ?
Oct 4, 2017
$\text{see explanation}$
#### Explanation:
"given the equation of a parabola in standard form "
•color(white)(x)y=ax^2+bx+c color(white)(x);a!=0
$\text{then the x-coordinate of the vertex is}$
•color(white)(x)x_(color(red)"vertex")... | {} |
# Relative Lengths of Chords of Circles
## Theorem
Of chords in a circle, the diameter is the greatest, and of the rest the nearer to the center is always greater than the more remote.
In the words of Euclid:
Of straight lines in a circle the diameter is greatest, and of the rest the nearer to the center is always ... | {} |
# Deriving proper time invariance from first principles
I'm trying to learn special relativity right now, and for various reasons I'd like to start by getting the invariance of proper time, rather than starting with the Lorentz transformations - if you can get the former, you can almost immediately recover the latter ... | {} |
# Equivalence of Definitions of Real Exponential Function
## Theorem
The following definitions of the concept of Real Exponential Function are equivalent:
### As a Sum of a Series
The exponential function can be defined as a power series:
$\exp x := \displaystyle \sum_{n \mathop = 0}^\infty \frac {x^n} {n!}$
### ... | {} |
simplify online. Then it will attempt to solve the equation by using one or more of the following: addition, subtraction, division, taking the square root of each side, factoring, and completing the square. equivalent expressions (calculator) DRAFT. An online algebra calculator simplifies expression for the input you g... | {} |
+0
# PLZ help
0
39
1
Let w and z be complex numbers such that $$Let w and z be complex numbers such that |w|=|z|=1 and wz\ne -1. Prove that \frac{w+z}{1+wz} is a real number.$$
Oct 2, 2020
#1
0
Let w = a + bi and z = c + di. Then
$$\dfrac{w + z}{1 + wz} = \dfrac{a + c + bi + di}{1 + (a + bi)(c + di)}$$
To ex... | {} |
# 777 kilograms in ounces
## Conversion
777 kilograms is equivalent to 27407.868434824 ounces.[1]
## Conversion formula How to convert 777 kilograms to ounces?
We know (by definition) that: $1\mathrm{kg}\approx 35.273962\mathrm{oz}$
We can set up a proportion to solve for the number of ounces.
$1 kg 777 kg ≈ ... | {} |
# ICHEP2018 SEOUL
Jul 4 – 11, 2018
COEX, SEOUL
Asia/Seoul timezone
## Searches for Lepton Flavour Violating decays at LHCb
Jul 5, 2018, 12:00 PM
20m
102 (COEX, Seoul)
Parallel
### Speaker
Luca Pescatore (EPFL - Ecole Polytechnique Federale Lausanne (CH))
### Description
Recent hints for lepton-universality viol... | {} |
# Math Help - markdown
1. ## markdown
I'm having a hard time understanding this question
Workwear Station uses a markup on cost of 60% to establish its retail prices. This pricing rule builds in a profit of 25% of cost. What rate of markdown can Workwear Station offer and just break even on the reduced price?
2. Yo... | {} |
Python/numba implementation of Wigner D Matrices, spin-weighted spherical harmonics, and associated functions
# Spherical Functions
NOTE: This package will still be maintained, but active development has moved to the spherical package. While this package works well for ℓ (aka ell, L, j, or J) values up to around 25, ... | {} |
+0
# Magic Numbers
+3
336
6
+555
I was reading this book and kept noticing that one number kept popping up - 1089. It turns out that when you multiply it, the numbers move sequentially through the columns.
1 - 1089
2 - 2178
3 - 3267
4 - 4365
5 - 5454
6 - 6543
7 - 7632
8 - 8721
9 - 9810
Can anyone else thin... | {} |
# $(X,d)$ Complete and totally bounded $\iff$ $(X,d)$ is compact
Completeness and total boundedness $$\iff$$ compactness
$$(X,d)$$ Totally bounded means that $$\forall \epsilon >0 \; \exists n(\epsilon) \in N$$ and $$\exists x_1\ldots x_n \in X$$ such that $$X=\cup_{i=1}^{n} B_{\epsilon}(x_i)$$
Here I will repeatedl... | {} |
### Home > INT1 > Chapter A > Lesson A.1.5 > ProblemA-56
A-56.
Calculate the following values.
1. If $y = 2 + 4.3x$, what is the value of $y$ when $x = −6$?
Substitute −6 in for x.
y = 2 + 4.3( −6 )
Multiply and simplify.
y = 2 + (−25.8)
y = −23.8
2. If $g(x)=(x−3)^2$, what is the value of $g(−9)$?
Follow the ... | {} |
In this post, I show that
$\lim_{x\rightarrow a}[f(x) – g(x)] = \lim_{x \rightarrow a} f(x) – \lim_{x \rightarrow a} g(x)$
given that $\lim_{x \rightarrow a} f(x) = A$ and $\lim_{x \rightarrow a} g(x) = B$. To do this, I approximately follow the steps in Reference [1].
Objective:
The objective is to directly show t... | {} |
# Shiny - Package array Error: Illegal pream-token-
I have the following table that is compiling when I use TeXnicCentre (running on MiKTeX):
\begin{table}[H]
\begin{center}
\begin{tabular}{\textwidth}
\Large{\textcolor{Gray}{DATE:}}& \\
\Large{\textcolor{Gray}{COUNTRIES:}}& \\
\Large{\textcolor{Gray}{DEVICES:}}& \\
... | {} |
# zbMATH — the first resource for mathematics
Graph homomorphisms via vector colorings. (English) Zbl 1414.05199
Summary: In this paper we study the existence of homomorphisms $$G \to H$$ using semidefinite programming. Specifically, we use the vector chromatic number of a graph, defined as the smallest real number $$... | {} |
Our Discord hit 10K members! 🎉 Meet students and ask top educators your questions.Join Here!
Princeton University
# Calculate the approximate (a) radius, (b) volume, and (c) density (in $\mathrm{kg} / \mathrm{m}^{3} )$ of a nucleus of gold, $_{79}^{197} \mathrm{Au}$ (You can ignore the binding energy of the nucleus ... | {} |
# Equivalent stress in a welded part
1. Nov 17, 2009
### guideonl
Hi everyone,
The practical equivalent stress in a welded part, subjected to torque and bending stresses, is the square root of the sum of the two squared shear stresses (from torque & equal shear) squared, + the normal stress (from bending) squared. ... | {} |
# Height of a tetrahedron
How do I calculate: The height of a regular tetrahedron, side length 1.
Just to be completely clear, by height I mean if you placed the shape on a table, how high up would the highest point be from the table.
-
I'm curious. If you mind telling us, what was the purpose of the interview? What... | {} |
Quantum field theory
1. Sep 19, 2015
shereen1
Hi all
I am studying quantum field theory and i want to just to check something. We have said that the problem with klein gordon equation for real field is that is predict positive and negative energies in addition to the negative probability density. For the complex kle... | {} |
# Laplace transform of a normal distribution
Let $X$ be a normal distribution with mean $0$ and variance $\sigma^2$. Then the Laplace transform of $X$ should be
$\int_0^\infty e^{-tx} \frac{1}{\sqrt{2\pi\sigma^2}}\exp\{-\frac{x^2}{2\sigma^2}\}dx$
Then I try to do integral on
$\int_0^\infty \exp\{-\frac{x^2}{2\sigma... | {} |
# senduwiki.org
### Site Tools
ethnography_-_mop_july_2017
# Differences
This shows you the differences between two versions of the page.
ethnography_-_mop_july_2017 [2018/05/22 18:15]127.0.0.1 external edit ethnography_-_mop_july_2017 [2019/04/01 09:44]admin 2019/04/01 09:44 admin 2018/05/22 18:15 external edit ... | {} |
## Soup search results
For discussion of specific patterns or specific families of patterns, both newly-discovered and well-known.
knightlife
Posts: 566
Joined: May 31st, 2009, 12:08 am
### Re: Soup search results
apgsearch found this "perfect" block type switch engine using traffic lights to clean up all debris:
C... | {} |
# sod weight calculator
One pallet weighs about 2,300 pounds and can fit in most average or large pick up trucks. This online tool will also display a conversion scale that automatically refreshes to relate to the current values and units selected. If you have more than 10 assignments, use the "Add Row" button to add ... | {} |
# Humboldt-Universität zu Berlin - Mathematisch-Naturwissenschaftliche Fakultät - Institut für Mathematik
FS Mathematische Statistik
## FS Mathematische Statistik
### M. REIß, V. SPOKOINY, W. HÄRDLE
Ort:
Weierstrass-Institut für Angewandte Analysis und Stochastik,
Erhard-Schmidt-Raum, Mohrenstrasse 39, 10117 Berlin... | {} |
What is a Continuation?
This week we explore the continuation, that noble construct of the mind – O bright, shining tool in the aspiring wizard’s toolchest! Half of what you shall read here is paraphrase, half allegory, and the rest? Sprinkled with a few potent grains of Scheme code.
Continuations are constructs that... | {} |
# Taking out number of subarrays from an array which contains all the distinct elements of that array
I am a beginner in C. My teacher gave me a homework problem in which a user would provide an array with its size.
What we have to do is:-
1) Take out all the distinct elements from that array.
2) Compare all the su... | {} |
## anonymous one year ago Giving medal to whoever helps? Using complete sentences, explain how to find the average rate of change for f(x) from x = 4 to x = 7.
1. anonymous
anyone?
2. anonymous
In order to find the average rate of change of a function from x=4 to x=7, you plug in x=7 into f(x) and subtract it by x=... | {} |
# Why is radian so common in maths?
I have learned about the correspondence of radians and degrees so 360° degrees equals $2\pi$ radians. Now we mostly use radians (integrals and so on)
My question: Is it just mathematical convention that radians are much more used in higher maths than degrees or do radians have some... | {} |
Browse Questions
Home >> AIMS >> Class12 >> Chemistry
# Which of the following is an example of metallic crystal solid?
$\begin{array}{1 1}(A)\;C&(B)\;Si\\(C)\;W&(D)\;AgCl\end{array}$ | {} |
how to add reference alleles to VCF?
1
0
Entering edit mode
20 months ago
dec986 ▴ 330
I’m converting gVCFs to VCF, but the reference alleles are missing. An example below:
#CHROM POS ID REF ALT QUAL FILTER INFO FORMAT 180525_FD02929177
1 97547947 . T . . . DP=31 GT:DP:RGQ 0/0:31:81
1 9... | {} |
# Modulo-N code
Modulo-N code is a lossy compression algorithm used to compress correlated data sources using modulo arithmetic.
## Compression
When applied to two nodes in a network whose data are in close range of each other Modulo-N code requires one node (say odd) to send the coded data value as the raw data $M_... | {} |
시간 제한 메모리 제한 제출 정답 맞은 사람 정답 비율
1 초 256 MB 3 0 0 0.000%
## 문제
A little bear Koma likes honey very much. One day, Koma found a storehouse full of honey. The storehouse had $M$ entrances and $M$ exits, and it turned out to be very complicated, like a maze. Soon Koma understood the structure of the storehouse and drew a ... | {} |
# Properties of Equipotential surface in uniform electric field
We have learned the electric Potential and potential energy in other articles. In this article, we are going to discuss the equipotential surface and its properties. Here we will consider that the equipotential surface in a uniform electric field. That me... | {} |
Qatapult - DonationCoder.com
HOME | Blog | Software | Reviews and Features | Forum | Help | Donate
Welcome Guest. March 31, 2015, 06:23:02 AM
Or did you miss your validation email?
Why not become a lifetime supporting member of the site with a one-time donation of any amount? Your donation entitles you to a ton of ad... | {} |
On the support of solutions to the generalized KdV equation
Annales de l'I.H.P. Analyse non linéaire, Volume 19 (2002) no. 2, p. 191-208
@article{AIHPC_2002__19_2_191_0,
author = {Kenig, Carlos and Ponce, Gustavo and Vega, Luis},
title = {On the support of solutions to the generalized KdV equation},
journal = {Annales ... | {} |
# Stochastic and Adversarial Online Learning without Hyperparameters
Ashok CutkoskyKwabena A. Boahen
Most online optimization algorithms focus on one of two things: performing well in adversarial settings by adapting to unknown data parameters (such as Lipschitz constants), typically achieving $O(\sqrt{T})$ regret, o... | {} |
# [pdftex] Character protruding
Thierry Bouche Thierry.Bouche at ujf-grenoble.fr
Tue Dec 18 10:04:53 CET 2001
```Concernant « Re: [pdftex] Character protruding », Gerolf écrit : «
»
» > Can I deduce \rpcode for protruding from the character width or from
» > \fontdimen parameters?
»
» Thierry Bouche wrote:
»
» >Of co... | {} |
## 13.7 Adjoints for exact functors
Results on adjoint functors between triangulated categories.
Lemma 13.7.1. Let $F : \mathcal{D} \to \mathcal{D}'$ be an exact functor between triangulated categories. If $F$ admits a right adjoint $G: \mathcal{D'} \to \mathcal{D}$, then $G$ is also an exact functor.
Proof. Let $X$... | {} |
MathSciNet bibliographic data MR408581 81.47 Glimm, James; Jaffe, Arthur Positivity of the $\phi \sp{4}\sb{3}$$\phi \sp{4}\sb{3}$ Hamiltonian. Fortschr. Physik 21 (1973), 327–376. Links to the journal or article are not yet available
For users without a MathSciNet license , Relay Station allows linking from MR numbers... | {} |
# Libraries for solving Lyapunov's equation
The following matrix equation $$B\Sigma + \Sigma B^T + C = 0$$ in $\Sigma$ $-$ for given $B$ and $C$ matrices $-$ appears in my work as a characterization of a covariance matrix. I have learned that this equation is known, in particularly in continuous time control theory, a... | {} |
# Combinatorics Question
1. Nov 26, 2014
1. The problem statement, all variables and given/known data
Eight cards are selected with replacement from a standard pack of 52 playing cards, with 12 picture cards, 20 odd cards, and 20 even cards.
(a) How many different sequences of eight cards are possible?
(b) How man... | {} |
# nLab pretriangulated dg-category
### Context
#### Homological algebra
homological algebra
and
nonabelian homological algebra
diagram chasing
### Theorems
#### Stable Homotopy theory
stable homotopy theory
# Contents
## Idea
Pretriangulated dg-categories are models for stable (∞,1)-categories in terms of d... | {} |
# How To Get Rid Of Ground Hornets How To Get Rid Of Ground Wasps And Hornets
how to get rid of ground hornets how to get rid of ground wasps and hornets.
how to safely get rid of ground hornets,how to get rid of ground digging hornets pictures,how to get rid of ground hornets near vegetables,how to get rid of ground... | {} |
# MongoDB Logistics
## Today's DB Objectives:
• Install mongodb and run the daemon mongod
• Make a mongolab db
• Sandbox mongo on cloud9
• Connect to mongodb via the terminal
• Perform the four basic CRUD tasks in mongo
• Start to grok the ethos of mongo and compare with traditional relational databases
### Installi... | {} |
• ### Photometric determination of the mass accretion rates of pre-main sequence stars. V. Recent star formation in the 30 Dor nebula(1708.03631)
Aug. 11, 2017 astro-ph.GA, astro-ph.SR
We report on the properties of the low-mass stars that recently formed in the central ~ 2.7'x2.7' of 30 Dor including the R136 cluster... | {} |
Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 11
# The Sum of an Infinite G.P. is 4 and the Sum of the Cubes of Its Terms is 92. the Common Ratio of the Original G.P. is - Mathematics
MCQ
The sum of an infinite G.P. is 4 and the sum of the cubes of its terms is 92. The common ratio of ... | {} |
# Getting semi-transparent text with matplotlib+pgf backend when compiling in LateX
So I am using the pgf backendin matplotlib to include some automatically compiled references to some other parts of my Tex documents (figures, bibliography) in my TeX document.
import matplotlib
matplotlib.use('pgf')
import matplotli... | {} |
## Approximate the area under two curves in R
Let’s say we have two curves, there is some overlap between them, and we want to calculate the amount of area of overlap.
x <- seq(-2,2,0.001)
y1 <- dnorm(x, 0, 1)
y2 <- dnorm(x, -1,1)
# plot them out
plot(x,y1, type = "l", bty = "l", lwd = 2, las = 1, ylab = "y")
lines(... | {} |
# Average temperature homework
1. Homework Statement
Wheat production in a given year, W, depends on the average temperature T and the annual rainfall R. Scientists estimate that the average temperature is rising at a rate of 0.15 degrees celsius per year and rainfall is decreasing at a rate of 0.1 cm per year. The al... | {} |
European global systemically important banks have become more leveraged over the last three quarters.
The average leverage ratio across the eight European G-Sibs, calculated as Tier 1 capital divided by total leverage exposure, stood at 4.57% in the third quarter, down from 4.63% the previous quarter and 4.84% at end-... | {} |
# zbMATH — the first resource for mathematics
$$L^ 2$$ decay for weak solutions of the Navier-Stokes equations. (English) Zbl 0602.76031
This paper is concerned with the asymptotic behavior in time of solutions to the Navier-Stokes equations defined on the whole of three-dimensional space. In a classical paper of J. L... | {} |
# 589.3nm +/- 0.3nm Absorption Lasing Medium?
1. Jul 21, 2013
### CoryG
Does anyone know of a lasing medium (perferably something that can be doped into an optical fiber, but a liquid or gas would work if not) that has a strong absorption at 589.0nm and 589.6nm?
Rationale: I'm trying to build a relatively cheap hig... | {} |
Conjunctions of Contrast
##### Get a free home demo of LearnNext
Available for CBSE, ICSE and State Board syllabus.
Call our LearnNext Expert on 1800 419 1234 (tollfree)
OR submit details below for a call back
clear
Contrastive conjunctions link two ideas that are considered to be different. Examples of contrastive ... | {} |
# Kerodon
$\Newextarrow{\xRightarrow}{5,5}{0x21D2}$ $\newcommand\empty{}$
Let $F: \operatorname{\mathcal{C}}\rightarrow \operatorname{\mathcal{D}}$ be a functor between categories. Suppose that $F$ admits a right adjoint $G: \operatorname{\mathcal{D}}\rightarrow \operatorname{\mathcal{C}}$. For each object $D \in \op... | {} |
# Chapter 1 - Section 1.1 - Introduction to Algebra: Variables and Mathematical Models - Exercise Set - Page 11: 41
$\frac{x}{30}$ +6
#### Work Step by Step
six more than the quotient of a number and 30 Let the number be x quotient of a number and 30= $\frac{x}{30}$ six more than $\frac{x}{30}$ $\frac{x}{30}$ +6
Af... | {} |
# Synopsis: A clean slate
#### Local density of states and superconducting gap in the iron chalcogenide superconductor Fe1+δSe1−xTex observed by scanning tunneling spectroscopy
Takuya Kato, Yoshikazu Mizuguchi, Hiroshi Nakamura, Tadashi Machida, Hideaki Sakata, and Yoshihiko Takano
Published November 17, 2009
Scann... | {} |
# How to solve for the interval of convergence in Newton's Method?
How do I solve for $\delta$ in $[r−\delta,r+\delta]$ where Newton's method will surely converge? For example in:
Explain Newton’s method for $$f(x) = x^3+x−2 = 0.$$ Show that Newton’s method converges if $$x_0 \in [1−1/30 , 1+1/30 ]$$ to a limit $L$. ... | {} |
×
## Exponential Functions
From compound interest to bubonic plague, things that grow or spread really fast are often modeled by exponential functions. Learn about these powerful functions (pun intended?).
# Rules of Exponents Review
What is the value of $$\dfrac{6^5}{6^3}$$ ?
True or false: $$(-2)^{3} = 2^{-3}$$ ... | {} |
## Check Out These 10 Killer Looks from Austin’s Very First International Drag Festival!
Címkék: , , , , , , , 2015 / 05 / 05
## Austin’s OraCola: Y’all Need To Get Outside And Smell Those Flowers!
Címkék: , , , , , , , , , 2015 / 04 / 10
## This Week, Austin’s OraCola Wants Y’all To Bake That Cake Right!
Címkék: ... | {} |
General Measurable Functions
# General Measurable Functions
Recall that an extended real-valued function $f$ is said to be Lebesgue measurable on its domain (assumed to be a Lebesgue measurable set) if for every $\alpha \in \mathbb{R}$ the set $\{ x \in D(f) : f(x) < \alpha \}$ is a Lebesgue measurable set.
Given an... | {} |
# Low-rank Tensor Estimation via Riemannian Gauss-Newton: Statistical Optimality and Second-Order Convergence
In this paper, we consider the estimation of a low Tucker rank tensor from a number of noisy linear measurements. The general problem covers many specific examples arising from applications, including tensor r... | {} |
# Is there any deep reason that special trig angles are a sequence of roots of integers?
We all are familiar with certain special values of sin and cos, e.g. $\sin(30^\circ)=0.5$, $\sin(45^\circ)=\frac{1}{\sqrt{2}}$ etc. In high school I found these values difficult to remember until I noticed they could be reformulat... | {} |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.