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Power Electronics
# Static induction devices
This post gives an introduction into static induction transistors. Static induction devices (SID) are transistors operating with a prepunch-through region. These devices feature outstanding operating characteristics, with frequencies up to 1THz, and have great switching sp... | {} |
# To calculate:To check if(f*g)(x)=(g*f)(x). Professor Harsh gave a test to his college algebra class and nobody got more than 80 points (out of 100) on the test. One problem worth 8 points had insufficient data, so nobody could solve that problem. The professor adjusted the grades for the class by a. Increasing everyo... | {} |
# Optimising functions¶
Now for something a bit different. PyTorch is a tensor processing library and whilst it has a focus on neural networks, it can also be used for more standard funciton optimisation. In this example we will use torchbearer to minimise a simple function.
## The Model¶
First we will need to creat... | {} |
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P: 13 1. The problem statement, all variables and given/known data Determine the expectation values of the product of the number operators $$\left\langle{N_{a_{1}}}{N_{b_{1}}}\right\rangle$$ Explain your result. 2. Relevant equations http://en.wikipedia.org/wiki/Hong-Ou-Mandel_effect 3. The attempt at... | {} |
Marks 1
More
Given two continuous time signals $$x\left( t \right) = {e^{ - t}}$$ and $$y\left( t \right) = {e^{ - 2t}}$$ which exist...
GATE CE 2011
Laplace transform of $$f\left( x \right) = \cos \,h\left( {ax} \right)$$ is
GATE CE 2009
The Laplace transform of a function $$f(t)$$ is $$F\left( s \right) = {{5{s^2} +... | {} |
# Kerodon
$\Newextarrow{\xRightarrow}{5,5}{0x21D2}$ $\newcommand\empty{}$
Remark 7.2.2.4. The converse of Corollary 7.2.2.3 is also true: if $e: A \rightarrow B$ is a morphism of simplicial sets having the property that precomposition with the induced map $e^{\triangleleft }: A^{\triangleleft } \rightarrow B^{\triang... | {} |
# Why does the inverse gamma distribution look essentially the same when increasing the variance?
I have a function in R which for a given mean $$\mu$$ and variance $$\sigma^2$$, spits out the parameters for the shape, $$\alpha$$, and rate, $$\beta$$ of the inverse gamma distribution with that mean and variance.
When... | {} |
# 3.3V Power Supply Module
Module with stabilizer 3.3V.
SKU: OTH15300695327
Price: 0.17 $Old Price: 0.99$
Product in stock
SSL Certificate
Quantity
# Overview
The stabilizer is useful for circuits you need and 3.3 V supply. The regulator is LDO, so it allows you to feed the input at 5 V, the other voltage used f... | {} |
# Angular momentum power plant on Earth
If tidal power plants are slowing down Earth's rotation then is it theoretically possible to build a power plant that would drain energy from Earth's angular momentum (thus slowing down it's rotation)?
What would such machine look like?
-
There are a few important points to m... | {} |
# Math Help - Basic Calculus HELP!!!!!!!! (:-)
1. ## Basic Calculus HELP!!!!!!!! (:-)
Find the gradient of the tangeant to the curve:
$
f(x) = x^3/2 - 5x^2$
at $x = 2$
Find the coordinates of the points at the curve:
$f(x) = (3x - 2)^2$ at which the tangeant is parralel to the line y - 6x = 8.
Find the coordinate... | {} |
What notions are used but not clearly defined in modern mathematics? - MathOverflow most recent 30 from http://mathoverflow.net 2013-05-22T05:01:13Z http://mathoverflow.net/feeds/question/56677 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/56677/what-notions-are-used-but-not-cl... | {} |
# Angle of elevation and depression
### Angle of elevation and depression
#### Lessons
When you look at an object above you, the angle between the horizontal and your line of sight to the object is called the angle of elevation.
When you look at an object below you, the angle between the horizontal and your line of... | {} |
# How do you prove sin(x+y)*sin(x-y)=(sinx)^2-(siny)^2?
Apr 16, 2015
Using the angle sum and difference formula of the function sinus on the first member:
$\left(\sin x \cos y + \cos x \sin y\right) \left(\sin x \cos y - \cos x \sin y\right) =$
${\sin}^{2} x {\cos}^{2} y - {\cos}^{2} x {\sin}^{2} y =$
$= {\sin}^{2... | {} |
# Letters to numbers to letters (poorly)
Every now and again, I'll encounter a large string of alphabetical text encoded as numbers from 1-26. Before I knew that I could just google a translator online, I had to personally, painstakingly copy and paste the entirety of the encoded text into a text document and translat... | {} |
# Positioning
CSS positioning
TAGS: CSS, Cyber Tech, Design, Programming, TECH
CSS properties for CSS Positioning (CSSP) can be applied to particular objects.
The primary CSS properties for CSSP are position and float. Position has three possible values:
• static. This is the default: normal flow, regular old HTML... | {} |
High Temperature Hardness Testing on alloys
using MFT5000
Characterizing mechanical properties at high temperatures is critical in applications such as engines, turbines, aerospace, power plant constituent parts, hot rolling, ceramics, combustion engine, metallic alloys etc. Phenomena such as phase transformation cha... | {} |
# Proof By Induction Division Questions, Answers and Solutions
a - answer s - solution v - video
## Question 1
Prove by mathematical induction:
a) $6^n+4$ is divisible by $5$ for all $n\ge0$ and $n\in\mathbb{Z}^+$a s v
b) $8^n-1$ is divisible by $7$ for all $n\ge1$ and $n\in\mathbb{Z}^+$a s v
c) $5^n-1$ is ... | {} |
Compatible Iwasawa decomposition for embedding of the orthogonal Lie group - MathOverflow most recent 30 from http://mathoverflow.net 2013-05-23T09:32:19Z http://mathoverflow.net/feeds/question/38011 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/38011/compatible-iwasawa-decompo... | {} |
Find the smallest natural number not in a given set of integers
What is the computational complexity of this task? The goal is to compute the number $x=\min(\Bbb N\setminus A)$, where $A$ is the input list and the complexity parameter is $n=|A|$ (which is finite).
This is a common problem when generating a unique ide... | {} |
# Basic group theory question on countable groups and infinite abelian groups.
Here are two (maybe simple) questions.
A: Every countable group $G$ has only countably many distinct subgroups.
B: Every infinite abelian group has atleast one element of infinite order.
Both these statements are false. I am unable to fi... | {} |
# What is the square root of 12?
$\sqrt{12} \implies \sqrt{4 \cdot 3} \implies \sqrt{4} \sqrt{3} \implies 2 \sqrt{3}$
Or, if a number is needed, we can estimate $\sqrt{3}$ as $1.732$ give:
$2 \sqrt{3} \cong 2 \cdot 1.732 \cong 3.464$ | {} |
# Safety engineering, target selection, and alignment theory
| | Analysis
Artificial intelligence capabilities research is aimed at making computer systems more intelligent — able to solve a wider range of problems more effectively and efficiently. We can distinguish this from research specifically aimed at making... | {} |
# Why my code for format change doesn't work? (Format Rules)
I want to write the following in mathematica
$$(\sum_{k=1}^n a^2_k)$$
Now I've written this as an indexed variable
Sum[(a^2)[k], {k, 1, n}]
which in mathematica shows up as $$\sum_{k=1}^n (a[k])^2$$ But I want this displayed as the Latex form, with the ... | {} |
Continuous stochastic process
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
In probability theory, a continuous stochastic process is a type of stochastic process that may be said to be "continuous" as a function of its "time" or index parameter. Continuity is a nice property for (the sam... | {} |
# Lately in Lie Groups
This came from a lecture given on 11/10/09.
The lecture began with the definition of the Cartan matrix. Basically you order the simple roots $a_1, ..., a_n$ and the $ij$th entry is $2\frac{(a_i,a_j)}{(a_j,a_j)}$.
Reason to care about the Cartan Matrix. Closely associated to the Cartan matrix... | {} |
COMPSTAT 2022: Start Registration
View Submission - COMPSTAT2022
A0617
Title: Living on the edge: A unified approach to antithetic sampling Authors: Lorenzo Frattarolo - European Commission Joint Research Centre (JRC) (Italy) [presenting]
Roberto Casarin - University Ca' Foscari of Venice (Italy)
Radu Craiu - Universi... | {} |
# Basis of the kernel
## Main Question or Discussion Point
Find a basis for Ker T that contains S = $$\begin{pmatrix} 1\\ 0\\ 1\\ 0\\ \end{pmatrix}$$, $$\begin{pmatrix} 0\\ 1\\ 0\\ 2\\ \end{pmatrix}$$ where $$T : R^4 -> R^4$$ is defined by
$$T\begin{pmatrix} 1\\ b\\ c\\ d\\ \end{pmatrix} = \begin{pmatrix} a - b - c\... | {} |
1:30 AM
@ApoorvPotnis yep, same problem, I think probably the ores are not just as simple in their actual composition as they are served to us in high school; and the original ore industry might have made advances earlier than organic chemistry did, so the former might not have had the facility to standardize its names... | {} |
geom_segment
0th
Percentile
Line segments and curves
geom_segment draws a straight line between points (x, y) and (xend, yend). geom_curve draws a curved line. See the underlying drawing function grid::curveGrob() for the parameters that control the curve.
Usage
geom_segment(mapping = NULL, data = NULL, stat = "id... | {} |
## Minimising the action for surface area in AdS
Hello people.
I've got an action which needs minimising
$$\int dr \ r \sqrt{U'^{2}+U^{4}}$$
Where U(r). Simply plugging this into the EL equations yields a nasty looking 2nd order nonlinear differential equation. I'm just wondering if there's an easier way of solving ... | {} |
Burning Fuels and Producing Water
I have a question about Optics and how this links to burning fuels in a combustion reaction.
If I have hexane, the following reaction occurs:
hexane + oxygen $\rightarrow$ carbon dioxide + water vapour
Now, I have a question. Why don't we tend to see any water being formed when we ... | {} |
$$\require{cancel}$$
An introductory course in computational physics for upper-level undergraduates. Topics covered include numerical linear algebra, eigenvalue problems, sparse matrix problems, numerical integration and initial-value problems, Fourier transforms, and Monte Carlo simulations. Programming examples are... | {} |
GMAT Question of the Day - Daily to your Mailbox; hard ones only
It is currently 20 Aug 2019, 15:55
### 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... | {} |
# Co-variance of dependent binomial random variables.
We roll a dice n times , let X (random variable) be the number of times we get 2 and Y- the number of times we get 3. I know that $X,Y$~$bin(n,\frac{1}{6})$, I need to find Cov(X,Y). I thought about first calculating $\mathbb{E}(XY)$. But i'm stuck .
Let $X_i$ tak... | {} |
How does salt change the pH of water?
Jun 16, 2016
Common salt, $N a C l$, the stuff with which you season your fish and chips, does not change the $p H$ of water.
Explanation:
$N a C l$ is the salt of a strong acid and a strong base. The salt does not affect equilibrium values of $\left[{H}_{3} {O}^{+}\right]$ and... | {} |
## Calculus (3rd Edition)
Minimum value is 5 at $x=0$ and maximum value is 21 at $x=2$
$f'(x)= 4x+4$ $f$ is differentiable everywhere. So, the only critical point we get is $c$ such that $f'(c)=0$ i.e., $4c+4=0\implies 4c=-4\implies c=-1$ But, this point is outside the given interval. To find the maximum and minimum v... | {} |
# 8.3.7. Calculate diffusion coefficients
The diffusion coefficient D of a material can be measured in at least 2 ways using various options in LAMMPS. See the examples/DIFFUSE directory for scripts that implement the 2 methods discussed here for a simple Lennard-Jones fluid model.
The first method is to measure the ... | {} |
Question
# A cone, a hemisphere and a cylinder stand on equal bases and have the same height. Show that their volumes are in the ratio $$1:2:3$$.
Solution
## Let the radius of cone, hemisphere and cylinder be r. Then, height of the hemisphere = r, height of the cone = r, and height of the cylinder = r. Let $$V_{1},V... | {} |
# 4th Class Mathematics Geometrical Figures
Geometrical Figures
Category : 4th Class
Geometrical Figures
Introduction
In our day to day life we come across a number of objects. All the objects has a specific shape and size. We recognize a number of objects by their shape. Therefore, to know about the objects and o... | {} |
base-4.17.0.0: Basic libraries
GHC.TypeError
Description
This module exports the TypeError family, which is used to provide custom type errors, and the ErrorMessage kind used to define these custom error messages. This is a type-level analogue to the term level error function.
Since: base-4.16.0.0
Synopsis
# Docu... | {} |
AInfinity -- A-infinity algebra and module structures on free resolutions
Description
Following Jesse Burke's paper "Higher Homotopies and Golod Rings", given a polynomial ring S and a factor ring R = S/I and an R-module X, we compute (finite) A-infinity algebra structure mR on an S-free resolution of R and the A-inf... | {} |
# Trinomial trees simulation
We consider a diffusion process $$X_t$$ which evolves according to $dX_t = \mu(t,X_t)dt + \sigma(t,X_t)dW_t$ where $$\mu$$ and $$\sigma$$ are smooth scalar real functions and $$W_t$$ is a scalar standard Brownian motion.
We observe the process on the time interval $$[0,T]$$ and we make th... | {} |
# Converting 10x Genomics BAM Files to FASTQ
bamtofastq is a tool for converting 10x Genomics BAM files back into FASTQ files that can be used as inputs to re-run analysis. The FASTQs will be output into a directory structure identical to the mkfastq or bcl2fastq tools, so they are ready to input into the next pipelin... | {} |
# Solved papers for 10th Class Science Solved Paper - Science-2015 Delhi Set-III
### done Solved Paper - Science-2015 Delhi Set-III
• question_answer1) Write the name and formula of the 2nd member of homologous series having general formula ${{\mathbf{C}}_{\mathbf{n}}}{{\mathbf{H}}_{\mathbf{2n-2}}}$.
• question_answ... | {} |
Prove the following trigonometric identities.
Question:
Prove the following trigonometric identities.
$\frac{1+\tan ^{2} \theta}{1+\cot ^{2} \theta}=\left(\frac{1-\tan \theta}{1-\cot \theta}\right)^{2}=\tan ^{2} \theta$
Solution:
We have to prove $\frac{1+\tan ^{2} \theta}{1+\cot ^{2} \theta}=\left(\frac{1-\tan \th... | {} |
# Clocks
How long path will walk the end of the clock's minute-hand long 7 cm for 330 minutes? How long will walk in the same time hour-hand?
Correct result:
minute hand walk: 241.9 cm
minute hand walk: 20.2 cm
#### Solution:
$s_m = 2\pi \cdot \dfrac{ 330}{ 60 } \cdot 7 = 241.9 \ \text{cm}$
$s_h = 2\pi \cdot \df... | {} |
D02 Chapter Contents
D02 Chapter Introduction
NAG Library Manual
# NAG Library Routine DocumentD02LXF
Note: before using this routine, please read the Users' Note for your implementation to check the interpretation of bold italicised terms and other implementation-dependent details.
## 1 Purpose
D02LXF is a setup... | {} |
Found 17 result(s)
### 06.05.2015 (Wednesday)
#### Superconformal Quantum Mechanics, Integrability and Discrete Light-Cone Quantisation
Regular Seminar Nick Dorey (DAMTP Cambridge)
at: 13:15 KCLroom G.01 abstract: I will discuss recent progress in formulating superconformal quantum mechanics models which describe ... | {} |
5
# A) x2 Y =1. Use Green's theorem to compute the area inside the ellipse 72 182 Use the fact that the area can be written as dxdy=i Jo ~ydx+xdy Hint: x(t) = 7 co...
## Question
###### A) x2 Y =1. Use Green's theorem to compute the area inside the ellipse 72 182 Use the fact that the area can be written as dxdy=i J... | {} |
# Completing the Square
Imagine a 6 x 6 grid of 36 equal minisquares, or tiles. A "shape" consists of interconnected adjacent tiles on this grid. [Adjacent tiles must share an edge, not merely a vertex.]
Prove the number of discrete combinations of 4 congruent shapes (9 tiles each) that will complete the grid.
One o... | {} |
# Tag Info
1 vote
### Rerolling or taking +2
This is an interesting probability question! So the key question is: What is the cutoff point in the possible outcomes of the first roll where the expected outcome of a re-roll is at least "3 ...
• 111
• 21.1k
### How to calculate the added expected damage from critical... | {} |
# Periodicity of Fourier series's coefficients
Why exactly continious Fourier-series's coefficients aren't periodic like coefficients of discrete Fourier series (DFS)? $e^{-j2\pi}$ is periodic in both sequences.
• Why do you think they should be periodic? The FS of a sine wave has just two coefficients, so it' cant b... | {} |
239k views
### Showcase of beautiful typography done in TeX & friends
If you were asked to show examples of beautifully typeset documents in TeX & friends, what would you suggest? Preferably documents available online (I'm aware I could go to a bookstore and find ...
151k views
### Nice scientific pictures show off
... | {} |
Followers 0
# OpenGL Looking for a decent Assimp animation tutorial
## 4 posts in this topic
I've been trying to get my head around how to properly set up a skinning animation system using the bone transform data that can be imported using the Open Asset Import Library (http://assimp.sourceforge.net) but always seem... | {} |
# Sum of independent Gaussians via change-of-variables formula
Let $X \sim N(\mu_1, \sigma_1^2)$ and $Y \sim N(\mu_2, \sigma_2^2)$ be independent. It can easily be shown via moment generating functions that $Z=X+Y$ is also normally distributed with $Z\sim N(\mu_1+\mu_2, \sigma_1^2+\sigma_2^2)$.
I was wondering if one... | {} |
## 4s orbitals and 3d orbitals
JamieVu_2C
Posts: 108
Joined: Thu Jul 25, 2019 12:16 am
### 4s orbitals and 3d orbitals
In the book, it says "Argon completes the third period. From Fig. 1E.1, you can see that the energy of the 4s-orbital is slightly lower than that of
the 3d-orbitals. As a result, instead of electron... | {} |
Les personnes qui possèdent un compte PLM-Mathrice sont invitées à l'utiliser.
# Complex dynamics and quasi-conformal geometry.
23-25 octobre 2017
Université d'Angers
Europe/Paris timezone
Accueil > Timetable > Contribution details
# Contribution
Université d'Angers - L003.
# Rationality is practically decidable f... | {} |
## Thinking Mathematically (6th Edition)
$1~in = 2.54 ~cm$ We can convert 23 inches to units of centimeters. $23~in = \frac{23~in}{1}\times \frac{2.54~cm}{1~in} = 58.42~cm$ | {} |
Language of TMs that accept some x in less than 50 steps. Is it in co-RE?
L = {M | M is a TM and there exists an input that the TM M accepts in less than 50 steps}
I need to find a minimal class it belongs to between R/ RE/ co-RE/ not in RE∪co-RE. I managed to show that it is in RE with a TM. I think its not in co-RE... | {} |
Limited access
Which of the following describes an inconclusive cadence?
A
A cadence with a progression of V - vi.
B
A cadence with a progression of V (or V$^7$) - I (or i). | {} |
## ABSTRACT
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Tidal Circulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Water Flow through the Forest . . . . . . . . . . . . . . ... | {} |
## Section1.4Invariant Subspaces
### Subsection1.4.1Invariant Subspaces
###### Definition1.4.1.Invariant Subspace.
Suppose that $\ltdefn{T}{V}{V}$ is a linear transformation and $W$ is a subspace of $V\text{.}$ Suppose further that $\lteval{T}{\vect{w}}\in W$ for every $\vect{w}\in W\text{.}$ Then $W$ is an invarian... | {} |
# 10/3 Special Lunch talk: The Cosmological Equation of State
in Uncategorized
October 10th, 2013
## Dr. Sergey Postnikov Nuclear Theory Center, Indiana University
CAS 500
12:30 pm
October 10, 2013
Abstract:
We study the dark energy equation of state as a function of redshift $z$ in a non-parametric way, without i... | {} |
The current GATK version is 3.3-0
#### Howdy, Stranger!
It looks like you're new here. If you want to get involved, click one of these buttons!
# GATK VCF PL field ordering for pooled/polyploid samples
Posts: 3Member
Hi,
I am using GATK UnifiedGenotyper 2.3-9 for a set of pooled samples. I am uncertain about the ... | {} |
## Keigh2015 one year ago Choose the correct simplification of the expression 3 times b all over a to the power of negative 2. 3a2b a to the 2nd power over 3 times b 3 times a to the 2nd power all over b Already simplified
1. Keigh2015
|dw:1435798618922:dw|
2. anonymous
bring the $$a$$ upstairs and make the exponen... | {} |
# What is the probability that an employee is suffering from anxiety disorder?
In a company $$7$$ percent of the employees are suffering from anxiety disorder, $$70$$ percent of people who suffer from anxiety disorder don't show up one day at work and $$10$$ percent of people who don't have anxiety disorder don't show... | {} |
Draw a free body diagram of the system, include dimensions for each force 2ED THE GON...
Question:
Draw a free body diagram of the system, include dimensions for each force
2ED THE GON PORCH HAS A FIXED SUPPAT AT THE WALL 켜 IM
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A 17.7 kg floodlight in a park is supported at the end of a hor... | {} |
Example: 1) Find the sign bit by xor-ing sign bit of A and B The special values such as infinity and NaN ensure that the floating-point arithmetic is algebraically completed, such that every floating-point operation produces a well-defined result and will not—by default—throw a machine interrupt or trap. Floating-Point... | {} |
Binomial expansion
1. Jul 13, 2010
thereddevils
How is
$$1+p+\frac{p^2}{2!}+\frac{p^3}{3!}+...=e^p$$ ?
2. Jul 13, 2010
Mentallic
I know it has to do with taylor expansions, but I've never studied this so I can't answer your question. I'd also like to see a proof for this so this is like some pointless post I'm m... | {} |
# Installing Latex on Android
I am trying to install latex on my Android device (no root). I didn't find an application to compile tex documents offline. By following instructions from this website (https://williewong.wordpress.com/2017/06/30/texlive-on-android/) I installed termux from play store and installed texliv... | {} |
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# Let A = {1,2,3,4}. Define Relations ${{R}_{1}},{{R}_{2}}\text{ and }{{R}_{3}}$ on $A\times A$ as:\begin{align} & {{R}_{1}}=\left\{ \left( 1,1 \right),\left( 2,2 \right),\left( 3,3 \right),\left( 4,4 \right),\left( 1,2 \right),\left( 2,1 \right) \rig... | {} |
# Project Euler #70: Time Efficiency Improvement
The problem was to find which $n$ for which $\varphi(n)$ is a permutation of $n$ and $n/\varphi(n)$ is minimum,now as we all know that means (simple conclusions from mathematics):
• $\varphi(n)$ should be a permutation of n.
• $n$ should have least number of prime fact... | {} |
# [Agda] list of types
Altenkirch Thorsten psztxa at exmail.nottingham.ac.uk
Mon Apr 15 16:33:32 CEST 2013
Actually, I think the type you have in mind is
data EachPositive (xs : List Nat) where
[] : EachPositive []
_::_ : forall {n} (EachPositive xs) -> EachPositive (n :: xs)
which isn't the same same as "map (\ n ... | {} |
Open Access
A. Vadivel, M. Navuluri and P. Thangaraja
DOI: https://doi.org/10.37418/amsj.9.11.59
Full Text
The main goal of this paper is to study some new classes of sets and to obtain some new decompositions of continuity. For this aim, the notions of $N_{nc} \mathcal{DP}$ sets, $N_{nc} \mathcal{DP}\epsilon$ set... | {} |
# Total nuclear spin of deuteron
1. Feb 24, 2012
### Demon117
Hello all, I am having trouble understanding how this works. In Krane there arises a discussion on total angular momentum I of the deuteron. While it is true it has three components, namely the individual spins of the neutron and proton, but also the orbi... | {} |
# Non-abbreviated Abbreviations
— 6 min
I have recently investigated a very interesting performance problem in Sentrys symbolication infrastructure.
We got reports of an increasing number of out-of-memory situations of our infrastructure. This started rather randomly, and was not correlated to any deploys. I had the... | {} |
## Archive for August, 2016
### (Slightly) Faster way to compute number of unique elements in matlab matrix
Wednesday, August 31st, 2016
The standard way to compute the number of unique entries in a matlab matrix A is:
numel(unique(A))
If our entries are positive integers, we can try to do the same thing using sp... | {} |
3k views
### Expected coverage after sampling with replacement 'k' times [duplicate]
Possible Duplicate: probability distribution of coverage of a set after X independently, randomly selected members of the set If I sample with replacement $k$ ...
2k views
### The exact probability of observing $x$ unique elements a... | {} |
# Energy stored in a device (Charged Capacitor)
## Homework Statement
The metallic sphere on top of a large van de Graaf generator has a radius of 2.0 m. Suppose that the sphere carries a charge of 3x10-5 C. How much energy is stored in this device?
## Homework Equations
So the equation I must use is this: U = 1/2C... | {} |
## Matthieu Mangeat
### Publications Scientifiques
##### [17] M. Karmakar1, S. Chatterjee2, M. Mangeat2, H. Rieger2,3, and R. Paul1, Jamming and flocking in the restricted active Potts model, submitted (2022).
1School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, Kolkat... | {} |
## Partially logarithmic ramification theory and characteristic cycles of rank 1 sheaves
### Abstract
The characteristic cycle of a constructible sheaf on a projective smooth algebraic variety is an algebraic cycle on the cotangent bundle that computes the Euler characteristic of the sheaf. In this talk, we consider ... | {} |
# Distribution Learning
Proceedings of The 27th International Joint Conference on Artificial Intelligence (IJCAI 2018), 2018.
## Abstract
Age estimation performance has been greatly improved by using convolutional neural network. However, existing methods have an inconsistency between the training objectives and eva... | {} |
# Validity of the Born approximation for identical-particle scattering
My understanding of the Born approximation is that it valid for scattering with small momentum transfer. In the context of two-particle, isotropic, elastic scattering, I would trust the Born approximation for scattering events where the momentum tr... | {} |
• ### Random Coin Tossing with unknown bias(1709.02362)
March 21, 2019 math.PR
Consider a coin tossing experiment which consists of tossing one of two coins at a time, according to a renewal process. The first coin is fair and the second has probability $1/2 + \theta$, $\theta \in [-1/2,1/2]$, $\theta$ unknown but fix... | {} |
# How big does a lake have to be to have its own Sea Breeze?
How big does a body of water need to have a sea breeze? Is there a chart on sea breezes wind speed that include lakes?
Could a circular lake create enough sea breeze to create a wind vortex in the center of the lake? https://worldbuilding.stackexchange.com/... | {} |
# How do you graph exponential decay functions?
This is an example for the function $f \left(x\right) = 2 \cdot {e}^{- 3 x}$
This is just a particular case of the general form $f \left(x\right) = a \cdot {e}^{k x}$
where $a$ is a constant representing the value at start and $k$ is the rate of growth (when $k > 0$) or ... | {} |
Note
This documents the development version of NetworkX. Documentation for the current release can be found here.
# networkx.drawing.layout.spring_layout¶
spring_layout(G, k=None, pos=None, fixed=None, iterations=50, threshold=0.0001, weight='weight', scale=1, center=None, dim=2, seed=None)
Position nodes using Fru... | {} |
# MSCS Seminar Calendar
Tuesday August 27, 2019
Organizational + discussion
Alex Furman (UIC)
4:00 PM in TBD
In this meeting we plan to discuss the topics for the semester, decide on the near future plans. My suggestions starts from Patterson-Sullivan theory, and several topics in manifolds of negative curvature. I wi... | {} |
# Catalan's constant fast convergent series
Working with some conjectured continued fractions that were published here, I have found the following fast monotone convergent series providing rational approximants to Catalan's constant $$\begin{equation*}G=\frac{1}{768}\sum_{n=1}^\infty\frac{4096^n\,P_0(n)}{n^3(2n-1)(3n-... | {} |
# Integration by parts vs integration by parts with substitution different answers
I'm trying to integrate
$$\int(5x^4+1)\ln(x^5+x)dx$$
When I use an online calculator (it first uses substitution and then integration by parts) I get the answer
$$(x^5+x)\ln(x^5+x)-x^5-x$$
but when I try a different approach (withou... | {} |
## Stream: Is there code for X?
### Topic: name-hunt: Union_of_singleton?
#### Damiano Testa (Nov 26 2020 at 04:49):
Dear All,
I have been unable to find the lemma below, but I would imagine that it is already in mathlib: do you know what is its name?
On a golfing technique, can you unify the rcases with exact?
T... | {} |
# PQ is parallel to RS and PR is parallel to QS, If ∠LPR = 35°
In the figure given below, PQ is parallel to RS and PR is parallel to QS, If ∠LPR = 35° and ∠UST = 70°, then what is ∠MPQ equal to?
1. 55°
2. 70°
3. 75°
4. 80°
∠LPR = 35°
Since ∠UST = 70°, So ∠QSR = 70°
Now, ∠SQP = 180° - 70° = 110°
So, ∠QPR = 70°
∠M... | {} |
#### Volume 16, issue 1 (2016)
Recent Issues
The Journal About the Journal Subscriptions Editorial Board Editorial Interests Editorial Procedure Submission Guidelines Submission Page Author Index To Appear ISSN (electronic): 1472-2739 ISSN (print): 1472-2747
Homotopy theory of $G$–diagrams and equivariant excision
... | {} |
### Home > CC2MN > Chapter 5 > Lesson 5.2.5 > Problem5-76
5-76.
Multiple Choice: Which of the following expressions could be used to find the average (mean) of the numbers $k$, $m$, and $n$?
The average of a set of numbers is the sum of the values divided by the number of values in the set.
Which of the above choic... | {} |
# Check “five in a row” for a 15x15 chess board
Problem:
For a given board, judge who had complete a continuously line (could be horizontal, vertical or diagonal) of 5 pieces. Input is a 15×15 chess board, could be white (1), black (2) or empty (0). Return if white win, if black win, if both win or if none of them wi... | {} |
# CERN Accelerating science
The Articles collection aims to cover as far as possible the published literature in particle physics and its related technologies. The collection starts, comprising only the most important documents in the first decencies, from the mid of the 19th century. The full coverage starts from 198... | {} |
# Handling Microsoft Excel file format
Jump to: navigation, search
TODO: If you know more about the container format, and whether it really needs a specialized library for processing, please expand this section.
TODO: Tips for displaying Excel documents which were manually parsed using one of the methods described.
... | {} |
# Ellipse Calculator
## How To Use Ellipse Calculator
Lets first understand, what is an ellipse and how we can find different properties of an ellipse?
Ellipse
An ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the fixed point is a consta... | {} |
Home > Circular Error > Circular Error Probable 90%
# Circular Error Probable 90%
## Contents
Liked the excerpt? Cambridge, MA: MIT Press. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. POA = point of aim, POI = mean point of impact Rayleigh: When the true center o... | {} |
Outlook: TRIPLE POINT SOCIAL HOUSING REIT PLC is assigned short-term Ba1 & long-term Ba1 estimated rating.
Time series to forecast n: 25 Jan 2023 for (n+6 month)
Methodology : Modular Neural Network (Social Media Sentiment Analysis)
## Abstract
TRIPLE POINT SOCIAL HOUSING REIT PLC prediction model is evaluated with M... | {} |
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