text stringlengths 100 957k | meta stringclasses 1
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Still going strong
Richard DeMillo just turned 74 years old the other day. Happy Birthday Rich, and many more.
Today I want to wish him also a happy un-birthday.
Resources for a new term from our vantage point
Eric Lander has been appointed director of the US Office of Science and Technology Policy, a post newly el... | {} |
# TCAP Success Algebra 1 EOC Chapter 11
### TCAP Success Algebra 1 EOC Chapter 11 Sample
1 pt DOK: 2
2.
Solve for x. ${x}^{2}-3x-18=0$
1 pt DOK: 2
4.
Solve the equation ${\left(x+9\right)}^{2}=49$
1 pt DOK: 2
6.
Using the quadratic formula, solve the following equation:
$3{x}^{2}=9x$
1 pt DOK: 3
8.
A right tr... | {} |
# Debate:Are moral decisions best made by rational thinking?
This is a Debate page.
This debate was created by Radioactive afikomen.
This debate was inspired by a (now removed) line from Essay:Why religion is bullshit. It asserted that "Moral decisions are best made by rational thinking. For example, no rational per... | {} |
# The Hutchinson News from Hutchinson, Kansas · Page 41
Publication:
Location:
Hutchinson, Kansas
Issue Date:
Thursday, October 7, 1971
Page:
Page 41
100th Year No. 96 • • j The Hutchinson News 20 Pages Thursday Evening, October 7,1971, Hutchinson, Kansas MO 2-3311 Price lOc The Drug You Drink-12 Few Getting Booze He... | {} |
# How do you solve 3x^2 = -12x - 15?
Jan 17, 2016
$x = - 2 \pm i$
#### Explanation:
Move the terms to the same side of the equation.
$3 {x}^{2} + 12 x + 15 = 0$
Divide both sides by $3$.
${x}^{2} + 4 x + 5 = 0$
$x = \frac{- 4 \pm \sqrt{{4}^{2} - 4 \left(1\right) \left(5\right)}}{2}$
$x = \frac{- 4 \pm \sqrt{- ... | {} |
## Ergodic Theory and Dynamical Systems
Short Title: Ergodic Theory Dyn. Syst. Publisher: Cambridge University Press, Cambridge ISSN: 0143-3857; 1469-4417/e Online: https://www.cambridge.org/core/journals/ergodic-theory-and-dynamical-systems/all-issues Comments: Indexed cover-to-cover
Documents Indexed: 3,335 Public... | {} |
# Python - ternary operator or if statement? [closed]
Which of these two alternatives is more readable?
token = map.get(token_str)
if not token:
token = Course(token_str)
or
token = map.get(token_str)
token if token else Course(token_str)
## closed as off-topic by Billal Begueradj, Stephen Rauch, Incomputable, V... | {} |
• ### Sentiment Analysis on Bangla and Romanized Bangla Text (BRBT) using Deep Recurrent models(1610.00369)
Nov. 24, 2016 cs.NE, cs.CL, cs.LG, cs.IR
Sentiment Analysis (SA) is an action research area in the digital age. With rapid and constant growth of online social media sites and services, and the increasing amount... | {} |
Home
Solve any problem (step by step solutions) Input table (Matrix, Statistics)
Mode :
SolutionHelp
Solution
Find hexadecimal to 7 base a10
Solution:
Your problem -> hexadecimal to 7 base a10
(a10)16 = (_______)7
First convert hexadecimal to decimal
(a10)16 = (_______)10
a10
= A × 16^2 + 1 × 16^1 + 0 × 16^0
=... | {} |
# Emission radiance in participating media
1. Mar 4, 2015
### Hypatio
This link discusses radiation in participating media. Eq. 9.13 gives a prediction of the changing power of a ray along the path length as:
$I_\eta(x)=I_\eta(0)\exp(-\tau_\eta)+I_{b\eta}[1-\exp(-\tau_\eta)]$
where $\tau_\eta$ is the absorption co... | {} |
# Numerical approximation of $\pi$
Points are randomly scattered inside the unit square, some fall within the unit circle with probability $P=\pi/4$.
so $P$ is approximated by the fraction $$P\approx \frac{\text{Number of red points}}{\text{Number of all points}}$$ this leads $$\pi \approx 4\frac{\text{Number of red ... | {} |
## Methods for Approximating Function Values
### About Approximating Function Values
The second stage of a table lookup operation involves generating outputs that correspond to the supplied inputs. If the inputs match the values of indices specified in breakpoint data sets, the block outputs the corresponding values.... | {} |
## Results (1-50 of 94 matches)
Next
Label $\alpha$ $A$ $d$ $N$ $\chi$ $\mu$ $\nu$ $w$ prim $\epsilon$ $r$ First zero Origin
2-374790-1.1-c1-0-0 $54.7$ $2.99\times 10^{3}$ $2$ $2 \cdot 3 \cdot 5 \cdot 13 \cdot 31^{2}$ 1.1 $$1.0 1 1 0 0.200143 Elliptic curve 374790.j 2-374790-1.1-c1-0-1 54.7 2.99\times 10^{3} 2 2 \cdot... | {} |
# unity destroy enemy when jumping on it
I am creating a 2D platformer using Unity3D, I want to have the player destroy enemies when it jumps/falls over them (just from the top). But I have been having problems trying to implement this. I stripped everything and used two simple box colliders in order to make it easy. ... | {} |
# Plotting Data That Doesn’t Exist is a Bad Idea
I came across a blog post recently that gives someone’s take on bicycle helmet legislation in New Zealand (links here and here). The post includes the plot below created by Chris Gillham on his anti-helmet advocacy website http://www.cycle-helmets.com (the NZ analysis i... | {} |
# A Closer Look at the Structure of Sterically Stabilized Liposomes: A Small-Angle X-ray Scattering Study
, A Closer Look at the Structure of Sterically Stabilized Liposomes: A Small-Angle X-ray Scattering Study, The Journal of Physical Chemistry BThe Journal of Physical Chemistry B, vol. 114, no. 20, pp. 6850-6854, 2... | {} |
<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
# 12.4: Renewable vs Non-Renewable Energy Resources
Difficulty Level: At Grade Created by: CK-12
Estimated4 minsto complete
%
Progress
Practice Renewable vs Non-Renewable Energy Resource... | {} |
# Falling Rod
1. Oct 22, 2014
### Satvik Pandey
1. The problem statement, all variables and given/known data
A thin rigid rod of length $l$ is placed perfectly vertical on a smooth ground. A slight disturbance on the upper end of rod causes lower end of rod to slip along the ground and rod starts falling down. Find ... | {} |
# Scale maths character horizontally
\end{document}
• This is exactly what I was after! May I ask why you wouldn't do it (and what you would do instead)? – Bill Wallis Mar 4 '17 at 20:30
• @BillWallis I'd keep the Lambda as is. – egreg Mar 4 '17 at 20:30 | {} |
# What is the distribution of max-min for a Gaussian distribution
For a process N(t), where at any instance of t=T0, the distribution of N(T0) is Gaussain with mu=0:
What is the distribution of max(N(t))-min(N(t))?
From my simulation, it has some non-zero positive mean value and a waveform that looks like Gaussian b... | {} |
Anagrams - Maple Help
StringTools
Anagrams
search for anagrams
Calling Sequence Anagrams( word, wordlist )
Parameters
word - Maple string; word to anagram wordlist - sorted list of strings; list of words to search for anagrams
Description
• An anagram of a word (string) is a permutation of word. The Anagram... | {} |
# Compressive sensing vs. Sparse coding
There apparently are different terminologies used to refer to the same field called "compressive sensing" such as (see this wiki page): compressed sensing, compressive sampling, or sparse sampling. I wonder about "sparse sensing" though!
Nonetheless, and after some internet sea... | {} |
# Which amines show N−N coupling reaction?
We add 1 equivalent of $$\ce{KCN}$$ followed by catalytic reduction via Lindlar's reagent $$(\ce{H2}/\ce{Pt})$$ to 4-chlorobenzyl chloride (1).
Verify whether the product (P) obtained will undergo an N−N coupling reaction with a diazonium salt or not.
According to me, it sh... | {} |
3 views
The Fourier series of a real periodic function has only
1. cosine terms if it is even
2. sine terms if it is even
3. cosine terms if it is odd
4. sine terms if it is odd
Which of the above statements are correct?
1. $\mathrm{P}$ and $\mathrm{S}$
2. $\mathrm{P}$ and $\mathrm{R}$
3. $\mathrm{Q}$ and $\mathrm{... | {} |
# Repository of files related to the NYT COVID-19 dataset
I’ve created a GitHub repository based on the New York Times’ COVID-19 database.
The New York Times has been compiling COVID-19 data from various state health departments. They have published the data as a GitHub repository. There are two files of interest in ... | {} |
# Question #b60b5
Nov 9, 2014
Using the data given, the heat of combustion would be 308 kJ/mol.
To calculate the heat of combustion, you must determine the amount of heat energy released and divide by the number of moles of ethanol combusted.
Heat:
The heat of combustion is used to raise the temperature of 800 g of... | {} |
Joint papers of Perles and Shelah
PeSh:354
Perles+Shelah, A closed $(n+1)$-convex set in ${\bf R}^ 2$ is a union of $n^ 6$ convex sets -- Israel J Math 70 (1990) 305-312
KPSh:408
Kojman+Perles+Shelah, Sets in a Euclidean space which are not a countable union of convex subsets -- Israel J Math 70 (1990) 313-342
Back t... | {} |
## Calculus: Early Transcendentals 8th Edition
$\displaystyle\int\limits_{\pi/4}^{\pi/3}\csc^{2}\theta d\theta=\dfrac{3-\sqrt{3}}{3}$
$\displaystyle\int\limits_{\pi/4}^{\pi/3}\csc^{2}\theta d\theta$ Integrate the expression directly and apply the second part of the fundamental theorem of calculus to get the answer: $\... | {} |
# “The Area Under the Curve Concept” using Uniform Distribution
Please click the link to see an interactive version.
In this example
$f(x)=\frac{1}{20}$ $where 120 \leq x \leq 140$
You can change the value of $b$ to see how does it change the value of the integral, which is the area under the curve. | {} |
# Single Robot: Amazon Warehouse
This exercise tries to recreate an automated warehouse environment (just like amazon warehouse) and introduces you to many concepts regarding navigation of robots in ROS2. By the end of this exercise, you will be able to understand and leverage Navigation 2 stack for Amazon Robot to pe... | {} |
# On fusion rules and intertwining operators for the Weyl vertex algebra
Authors: Dražen Adamović, Veronika Pedić
Journal of Mathematical Physics 60, 081701 (2019);
Abstract: In vertex algebra theory, fusion rules are described as the dimension of the vector space of intertwining operators between three irreducible mo... | {} |
Latest update
# How to check if $\mathbb{Z}_n\setminus \{\bar{0}\}$ create a group (or not a group) with multiplication ? (with given n)
2018-04-03 17:36:14
How to check if $\mathbb{Z}_n\setminus \{\bar{0}\}$ create a group with multiplication ? (with given n)
For example, if $\mathbb{Z}_{41}$ create a group with m... | {} |
MathSciNet bibliographic data MR2227950 82B44 (15A52 33C90 81R12 82B41) Desrosiers, Patrick; Forrester, Peter J. Hermite and Laguerre $\beta$$\beta$-ensembles: asymptotic corrections to the eigenvalue density. Nuclear Phys. B 743 (2006), no. 3, 307–332. Article
For users without a MathSciNet license , Relay Station al... | {} |
Gravity Engine Doc (1.4)
Doc for Version 1.4 (updated Feb 27th, 2017)
New in 1.4:
• customize gravity to any force you wish
• OrbitData calculates time to closest approach
• minor bug fixes
Code Documentation: http://nbodyphysics.com/gravityengine/html/
Overview
Gravity Engine (GE) provides a powerful, accurate p... | {} |
# Math Help - The inverse of a one to one function
1. ## The inverse of a one to one function
Hello forum,
I personally believe, though I'm not sure, that this topic should be in the Algebra forum. Though, because I'm taking this from a Precalculus class I wasn't entirely sure whether to place it there.
Find the in... | {} |
A software package for graphical building and analysis of compartmental simulation models
Description
This R package provides functionality that lets the user build and analyze compartmental simulation models, implemented as ordinary differential equations, stochastic equivalents, or discrete time models.
All model b... | {} |
# Problem understanding the derivation of the Boltzman distribution
1. Jul 4, 2014
### hideelo
I am currently reading "Quantum Physics of Atoms, Molecules, Solids, Nuclei, and Particles" by Robert Eisberg and Robert Resnick (2nd edition). In Appendix C they derive the boltzman distribution and they seem to be saying... | {} |
# AP Statistics Curriculum 2007 Limits Norm2Poisson
## General Advance-Placement (AP) Statistics Curriculum - Normal Approximation to Poisson Distribution
### Normal Approximation to Poisson Distribution
The Poisson(λ) Distribution can be approximated with Normal when λ is large.
For sufficiently large values of λ,... | {} |
Standard domain probability density
Collect $$x + i and$$ randomly with respect to the hyperbolic measure of $${z: | z | geq1, | mathcal R (z) | leq frac12 }$$. What does the probability distribution function of $$frac1 { sqrt y}$$ It seems? | {} |
# how many atoms does 3 n2o have
But each molecule of water contains 2 H and 1 O atom = 3 atoms, so there are approximately 1.8 x 10 24 atoms in a mole of water. and to find the mass of that number of moles, we multiply by the formula mass of N2O, which is 44. and it gives us 1.6 grams Now N2O if you do a calculation ... | {} |
# Chapter 25 - Optical Instruments - Questions: 18
Violet light.
#### Work Step by Step
The Rayleigh criterion, equation 25-7, calculates the resolution limit for a lens/mirror of diameter D when using light of wavelength $\lambda$. The objects are resolvable if they are separated by a minimum angle $\theta$, where ... | {} |
Four rods, two of length a and two of length b, are linked to form a kite, as shown in the diagram. The linkage is moveable so that the angles change. What is the maximum area of the kite?
Now suppose the four rods are assembled into a linkage which makes a parallelogram. What is the maximum area of this parallelogram... | {} |
Baseline PIC 12F508 Delay Loop Goto Instruction
I have been experimenting with a PIC 12F508 and have just begun writing my own delay loops in assembler. Nothing fancy yet just toggling an LED connected to GP1 (set as an output) on and off to verify the code.
I finally got my loop to work but I don't understand why it... | {} |
Linking associative algebras with nonassociative algebras - MathOverflow most recent 30 from http://mathoverflow.net 2013-06-20T01:54:45Z http://mathoverflow.net/feeds/question/82220 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/82220/linking-associative-algebras-with-nonassoci... | {} |
# How to avoid subsection recolouring in amsart?
In the amsart package the text after the subsection continues at the same line as the subsection title. I want to put some coloured text just after the subsection. Here is my example:
\documentclass{amsart}
\usepackage{xcolor}
\title{War and Peace}
\author{Leo Tolsto... | {} |
# Young's Double Slit with 2 Wavelengths variant
1. Apr 25, 2016
### JohnGaltis
1. The problem statement, all variables and given/known data
A point light source is used in a Double Slit experiment. The light source contains two wavelengths(500nm and 600nm).
Separation of the two slits d=1mm. Two sets of interferen... | {} |
longtailaggregator.com
# Main topics about normal distribution right tail
Check also videos for this topic
## Skewed Distribution: Definition, Examples - Statistics How To
A left-skewed distribution has a long left tail. Left-skewed distributions are also called negatively-skewed distributions. That's because there... | {} |
# Editing a Very Poorly Written Proof
I’m teaching Discrete Math this semester. Discrete Math is our college’s “introduction to proofs” class. We spend a lot of time talking about and practicing proofwriting. In earlier blog posts I shared my “Nuts and Bolts of Writing Mathematics” and an “editing checklist” that I gi... | {} |
APS/Alan Stonebraker
Figure 1: (a)—(c) show how the charges of the $π$ mesons from the $D*$ and the $D$ decay can be used to tag the $D$ “flavor” ($D0$ or $D¯0$) at production and decay. In a right-sign (RS) decay the charges match [see (a)], unlike in wrong-sign (WS) decays, for which there are two possible sources [... | {} |
## Results (22 matches)
Label $\alpha$ $A$ $d$ $N$ $\chi$ $\mu$ $\nu$ $w$ prim $\epsilon$ $r$ First zero Origin
4-6300e2-1.1-c1e2-0-0 $7.09$ $2.53\times 10^{3}$ $4$ $2^{4} \cdot 3^{4} \cdot 5^{4} \cdot 7^{2}$ 1.1 $$1.0, 1.0 1 1 0 0.0723449 Modular form 6300.2.k.e 4-6300e2-1.1-c1e2-0-1 7.09 2.53\times 10^{3} 4 2^{4} \c... | {} |
# Apply Bayes to multiple conditions
I am trying to simulate a process of selection without replacement. The process is one in which the system places a set of items in a specific order, and then the user selects N items in whatever order they want. The order of the items will vary depending on an algorithm.
The prob... | {} |
### Problem Description：
You are messaging in one of the popular social networks via your smartphone. Your smartphone can show at most k most recent conversations with your friends. Initially, the screen is empty (i.e. the number of displayed conversations equals 0).
Each conversation is between you and some of your ... | {} |
# Benefits of oversampling in a realtime noise-cancellation system
When sampling a signal, it is standard practice to use a sampling rate that is greater than two times the bandwidth of the signal in order to avoid aliasing. The result is then low-pass filtered (and sometimes upsampled prior to this) in order to get r... | {} |
# Little confusing i'm not sure, how bout u?
1. Nov 29, 2004
### aisha
Here is the question 3x^2-24x+48=0, determine the value of the discriminant. What does this value tell you about the equation? How many times does the corresponding function cross the x-axis?
Ok first part a=3 b=-24 c=48
discriminant b^2-4ac
so ... | {} |
# Marcin Sabok: Automatic continuity for isometry groups
Place: Fields Institute, Room 210
Date and time: Friday 16 January 2015 (13:30-15:00)
Speaker: Marcin Sabok
Title: Automatic continuity for isometry groups
Abstract: We present a general framework for automatic continuity results for groups of isometries of m... | {} |
## 'Weekly Problem 37 - 2007' printed from http://nrich.maths.org/
This regular hexagon has been divided into four trapezia and one hexagon. If each of the five sections has the same perimeter, what is the ratio of the lengths $p$, $q$ and $r$? | {} |
Trick to Solving Integrals Involving Tangent and Secant
[Total: 18 Average: 4.3/5]
This little trick is used for some integration problems involving trigonometric functions is probably well-known, but I only learned it yesterday. So under the assumption that others don’t know it, I will share my insight.
When you... | {} |
# IRC channel logs
## 2018-01-12.log
back to list of logs
<buenouanq>sneek: later tell civodul but doesn't a swap partition take care of that?
<sneek>Got it.
<g_bor>bavier: I've also noticed that. We also had some discussion about having that phase modified. It would be desirable, if we could finally have the same p... | {} |
What's new
# YouTubeT4-06: Introduction to binomial option pricing model: two-step
#### Nicole Seaman
##### Director of FRM Operations
Staff member
Subscriber
The binomial option pricing model needs: 1. A set of assumptions similar but not identical to those found in Black-Scholes; 2. A framework; i.e., risk-neutral... | {} |
# In a tensile testing experiment on a specimen of 1 cm2 area, the maximum load observed was 5 tonnes and neck area 0.25 cm2. The ultimate tensile strength of specimen is
Free Practice With Testbook Mock Tests
## Options:
1. 2.5 tonnes/cm2
2. 10 tonnes/cm2
3. 5 tonnes/cm2
4. 20 tonnes/cm2
### Correct Answer: Opt... | {} |
26 July 2022
### non homogeneous recurrence relation examples
Answer (1 of 2): The general solution to a linear nonhomogeneous recurrence is obtained by adding the general solution to the homogenous part and the particular solution to the nonhomogeneous part. Example. Example 2.2. The recurrence rela-tion m n = 2m n ... | {} |
Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles an... | {} |
# Stripline (with target impedance) between ground and power planes?
The common idea for a stripline is that the trace is sandwiched between two ground planes.
My question: is it the same, for the purpose of characteristic impedance, to have a ground plane or a power (VCC) plane? That is, would the stripline's charac... | {} |
## How To Find If Vectors Are Parallel
Find the dot product of the two vectors Perform the vector operation and state whether the result is a vector or a scalar Use the dot product to find the magnitude The Angle Between Two Vectors Overview Find the angle between two vectors Determine whether the two vectors are orth... | {} |
What is it that distinguishes one atmospheric layer from another?
The atmosphere of a planetary body (assuming it has an atmosphere) is described as being made up of distinct layers.
For example, Earth, Saturn and Jupiter all have a stratosphere and a troposphere.
What is it that defines where one layer stops and an... | {} |
Which metric to use for language translation?
So I am using a pre-trained model to do the language translation
Eg:
Input = "Good morning"
Output = "Bonjour"
I would like to see if the translation is correct. I do not have any reference sentence for the translated output.
Can someone please tell me how can I com... | {} |
# Document proxy object 'const' not being constant in Rcpp FAQ #628
Closed
opened this issue Jan 11, 2017 · 3 comments
Member
### eddelbuettel commented Jan 11, 2017
See eg #627 for a very recent example. That should have gone to the FAQ ages ago.
Contributor
### coatless commented Mar 23, 2017 • edited by eddelb... | {} |
# How to add zero before a vector in R?
To add zero before a vector in R, we can simply use rep function and provide the number times we want to have zero in the vector.
For Example, if we have a vector called X that contains three values say 1, 2, 3 and we want to add three zeros before this vector then we can use t... | {} |
### Home > CCA > Chapter 6 > Lesson 6.1.4 > Problem6-44
6-44.
The cost of a 55 inch HDTV is decreasing 15% per year. Homework Help ✎
1. What is the multiplier?
If the cost decreased by 15% each year, the newcost would be 85% of the previous year.
0.85
2. If the current cost of the HDTV is $1500, what will it cost... | {} |
Home / News / Award / Spring 2011 Mechanics Scholars
# Spring 2011 Mechanics Scholars
10 years ago /
A dozen Texas A&M University students enrolled in Physics 218 (Classical Mechanics) this spring have been honored by the Department of Physics and Astronomy as its latest Addison Wesley/Benjamin Cum... | {} |
We have moved to a new Sailfish OS Forum. Please start new discussions there.
man command
I suggest adding the man and whatis commands to Sailfish OS in order to access manual pages for us Linux command line lovers. Many manuals are already there (/usr/share/man/), but cannot be accessed directly (example man bash).
... | {} |
## Archive for the 'Occasional' Category
Ross-Littlewood Paradox [Image from Steemit website: here. ]
A most perplexing paradox appeared in Littlewood’s book A Mathematician’s Miscellany. It was later analysed in detail by Sheldon Ross in his 1988 book A First Course in Probability.
### Bang! Bang! Bang! Explosivel... | {} |
## Friday, February 25, 2005
### New record prime
The Mersenne numbers are the numbers of the form "2^p - 1". Several centuries ago, some people used to think that these numbers were always primes if "p" itself is a prime. While it's true for the first few values, the general claim is, of course, false. Primality of ... | {} |
Article Contents
Article Contents
# A new mechanism of the chaos suppression
• The standard Melnikov method for analyzing the onset of chaos in the vicinity of a separatrix is used to explore the possibility of suppression of chaos of a certain class of dynamical systems. For a given dynamical system we apply an exte... | {} |
# Boost-Build :
Subject: Re: [Boost-build] Big trouble trying to build bjam in Windows XP sp3 because of the path and file names with white spaces
From: Estanislao Chapel (Estanislao.Chapel_at_[hidden])
Date: 2008-10-15 13:02:58
The Bjam version is 1.36.0
The problem is that when a path or file name as C:\program fil... | {} |
## Planack's constant
$E=hv$
Savannah Mance 4G
Posts: 107
Joined: Fri Aug 30, 2019 12:17 am
### Planack's constant
Dr. Lavelle mentioned Planack's constant is h=6.63x10^-34 J.s in lecture. What is Planack's constant used for or what is it a constant for?
Akshay Chellappa 1H
Posts: 59
Joined: Wed Sep 11, 2019 12:15... | {} |
# linear algebra – How well-behaved are the operations of mapping a matrix to the \$S\$ or \$N\$ part of the \$S+N\$ decomposition?
Consider the maps $$S,N colon mathrm{Mat}_{n}(mathbb{C}) to mathrm{Mat}_{n}(mathbb{C})$$ taking a matrix to the $$S$$ or $$N$$ part of the $$S+N$$ decomposition. How well-behaved are thes... | {} |
# [seqfan] Re: generation function ology question
William Keith william.keith at gmail.com
Tue Apr 17 11:44:49 CEST 2012
On Tue, Apr 17, 2012 at 4:33 AM, Peter Lawrence
<peterl95124 at sbcglobal.net>wrote:
>
> if G(x) is the generating function for sequence a(n), then is there a
> formula for the GF of the sequence ... | {} |
## Elementary Algebra
$\frac{y}{(x-2)}$
We first factor the denominator of the fraction: $\frac{xy}{x^{2}-2x}$ $\frac{xy}{x(x-2)}$ Cancelling $x$ as it is common to both numerator and denominator, we obtain: $\frac{xy}{x(x-2)}=\frac{y}{(x-2)}$ | {} |
# Why Rust?
Trustworthy, concurrent systems programming.
September 4, 2015
Ropes and knots (source: O'Reilly)
Systems programming languages have come a long way in the 50 years since we started using high-level languages to write operating systems, but two thorny problems in particular have proven difficult to crack... | {} |
# Animations of traces
The following are animations of the $x$,$y$, and $z$ traces being taken of various surfaces.
• This is the sphere, defined by $x^2+y^2+z^2=1$. Notice that all three traces are families of circles. For the $x$ traces, the radius of a circle in a given trace is $\sqrt{1-x^2}$. This explains why t... | {} |
# Does there exist a priority queue with $O(1)$ extracts?
There are a great many data structures that implement the priority-queue interface:
• Insert: insert an element into the structure
• Get-Min: return the smallest element in the structure
• Extract-Min: remove the smallest element in the structure
Common data ... | {} |
English
Item
ITEM ACTIONSEXPORT
Filtrations in Dyson-Schwinger equations: next-to^{j} -leading log expansions systematically
Krueger, O., & Kreimer, D. (2015). Filtrations in Dyson-Schwinger equations: next-to^{j} -leading log expansions systematically. Annals of Physics, 360, 293-340. doi:10.1016/j.aop.2015.05.013.... | {} |
## What is a hierarchically hyperbolic space?
Hey everybody, it’s been a while…
This post is about the notion of hierarchically hyperbolic space we defined with Jason Behrstock and Mark Hagen in this paper, which is a generalisation of the notion of (Gromov-)hyperbolic space. The main examples of hierarchically hyperb... | {} |
# Math Help - Factoring Formulas
1. ## Factoring Formulas
Question:- Factorize x2+49 ?
2. ## Re: Factoring Formulas
You could write:
$x^2+49=x^2-(-49)=x^2-(7i)^2=(x+7i)(x-7i)$
(x+7)^2 -14x
4. ## Re: Factoring Formulas
Originally Posted by Trefoil2727
(x+7)^2 -14x
This is certainly equal to the original formula ... | {} |
directx matrices
This topic is 4616 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.
Recommended Posts
in my app i need to set the projection matrix myself (meaning i CAN'T use D3DXMatrixPerspectiveFovLH) i went to the documentation that comes with directx and read... | {} |
# utils.perlpie¶
## Module: utils.perlpie¶
Perform a global search and replace on the current directory recursively.
This a small python wrapper around the perl -p -i -e functionality. I strongly recommend running perlpie on files under source control. In this way it’s easy to track your changes and if you discover ... | {} |
# Keep running the function without restarting it?
I have this problem that i cannot make run my while(true) without it get restarted..
I think the problem occurs since
in my main loop
int main
{
ros::init(argc,argv, "loop");
loop();
ros::spin();
}
In side loop()
void loop()
{
cout << "Are you ready" << endl;
{... | {} |
# H2Arm - BSP vs PID experiments
Citation Author(s):
Enrica
Zereik
CNR-INM
Fabio
Bonsignorio
Angelo
Odetti
Submitted by:
Enrica Zereik
Last updated:
Fri, 02/28/2020 - 15:54
DOI:
10.21227/4692-2z85
Data Format:
Dataset Views:
74
Rating:
### KEYWORDS
Many different methods have been proposed in the control and robotic... | {} |
# Tag Info
27
A random symbol is taken from a list and appended to a token list; when the width of the accumulated symbols is more than the width of the word minus 2pt, the symbols are printed, otherwise another symbol is appended. \documentclass{article} \usepackage{xparse,pgf} \ExplSyntaxOn \NewDocumentCommand{\cen... | {} |
0.2 A Technical Introduction¶
FriCAS has both an interactive language for user interactions and a programming language for building library modules. Like Modula 2, PASCAL, FORTRAN and Ada, Ada the programming language emphasizes strict type-checking. Unlike these languages, types in FriCAS are dynamic objects: they ar... | {} |
# LaTeX Example Snippets
A LaTeX document consists of two parts the preamble and document body. The preamble starts always whit the command \documentclass[]{}. Between the square brackets “[]” follows a comma-separated list of optional arguments to configure the document class properties. The document class is given ... | {} |
How to resolve "Could not find or load main class package" in Java?
JavaObject Oriented ProgrammingProgramming
Once you write a Java program you need to compile it using the javac command, this shows you the compile time errors occurred (if any).
Once you resolve them and compile your program success fully, an execu... | {} |
Search FQXi
Please also note that we do not accept unsolicited posts and we cannot review, or open new threads for, unsolicited articles or papers. Requests to review or post such materials will not be answered. If you have your own novel physics theory or model, which you would like to post for further discussion amo... | {} |
# $p^n\mid ((p^{n-m}+1)^j-1)$?
Let $m$ and $n$ be natural numbers, where $n>m\geq 1$ and $p$ be an odd prime. Could we determine all natural numbers $j$ such that $p^n\mid ((p^{n-m}+1)^j-1)$?
• Are you asking if this is true for all natural numbers $n,m,j$ and every prime $p\not=2$? – Bobson Dugnutt Sep 16 '16 at 20:... | {} |
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# Wind resources for renewable energies Coursera Quiz Answers
## Get Wind resources for renewable energies Coursera Quiz Answers
The main goal of this course is to get the necessary knowledge on atmospheric and fluid dynamics in order to quantify the wind resource o... | {} |
# What is intrinsic curvature?
What does it mean to say spacetime is curved?
My intuition suggests to me that whenever we have an $$n$$ dimensional curved object there is some m dimensional flat space in which the object is embedded, where $$m>n$$.
For example a sphere is curved but we understand that in relation to... | {} |
Math Calculators, Lessons and Formulas
It is time to solve your math problem
mathportal.org
• Pre algebra
• Fractions
• Simplification of a fraction
# Simplification of a fraction
ans:
syntax error
C
DEL
ANS
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×
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• Question 1: 1 pts The two fractions $\f... | {} |
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# Improving Consistency-Based Semi-Supervised Learning with Weight Averaging
Jun 19, 2018
Ben Athiwaratkun, Marc Finzi, Pavel Izmailov, Andrew Gordon Wilson
Recent advances in deep unsupervised learning have renewed interest in semi-supervised m... | {} |
## Diffusion and mixing in fluid flow via the resolvent estimate. (arXiv:1811.11904v1 [math.AP])
In this paper, we first present a Gearhardt-Pr\"uss type theorem with a sharp bound for m-accretive operators. Then we give two applications: (1) give a simple proof of the result proved by Constantin et al. on relaxation ... | {} |
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