text stringlengths 100 957k | meta stringclasses 1
value |
|---|---|
# Why $\{(a,b) | a\leq b\}$ is not symmetric?
I want to know why $$\{(a,b) \mid a\leq b\}$$ is not symmetric, when $$\{(a,b) \mid a\leq b\} =\{(a,b)| a<b \text{ or }a=b\}$$ So if a=b that means aRb and bRa so it is symmetric, right ?
Thanks all
• Maybe you're confusing symmetric with reflexive? A relation $R$ is sym... | {} |
Documentation
Getting Started
Section Builder
Operations
Built-Up and Composite Sections
Custom Shapes
Member Design
General
Member Design Modules
Code Verification
RC Design
General
Code Verification
# Catenary Cables
Cables are a special type of member that can only be analyzed via a Non-Linear Analysis. Cables... | {} |
# Dot product
### Dot product
#### Lessons
Notes:
Dot Product
Let $u=$ and $v=$. Then the dot product of these two vectors will be:
$u \cdot v = ad + be + df$
Dot Product Property
If the dot product of two vectors $u$ and $v$ gives 0, then the vectors are perpendicular. In other words,
$u \cdot v=0 \to$ perpendi... | {} |
# std::experimental::filesystem::absolute, std::experimental::filesystem::system_complete
< cpp | experimental | fs
Defined in header path absolute( const path& p, const path& base = current_path() ); (1) (filesystem TS) path system_complete(const path& p); path system_complete(const path& p, error_code& ec); (2) ... | {} |
# How do you find the equation that represents the image of circle (x- 5)^2 + (y + 12)^2 = 169 after a translation 2 units right and 3 units down?
Jan 30, 2016
Adjust to standard form to see what the original centre is, translate the centre, then plug back into the equation to find:
${\left(x - 7\right)}^{2} + {\lef... | {} |
# How do you solve and write the following in interval notation: x>= -4?
This inequality is already solved for $x$.
In interval notation: $\left[- 4 , + \infty\right)$ | {} |
# Shengshou Gigaminx
#### JustinTimeCuber
##### Member
Seems interesting, although I'm definitely not a -minx person; I average sup 3:00 on mega lol
#### hamfaceman
##### Member
If I ever get into mega, this might be fun to get. But as of now, I'll give it a miss. Hopefully it's good! | {} |
Select Page
# I.S.I. & C.M.I. Entrance 2019 Test Series
From advanced Number Theory to beautiful geometry and combinatorics. Prepare for some seriously interesting mathematics!
## Our Classes for I.S.I. & C.M.I. Entrance 2019
### I.S.I. B.Stat – B.Math – One full length Model Test
Take one full-length I.S.I. Entra... | {} |
# differentiating a polynomial $k$ times.
If we have the polynomial $$P(x-a)=f(a)+f'(a)(x-a),$$ I can't get how does differentiating the polynomial $k$ times we obtain $$P_k(x-a)=f(a)+f'(a)(x-a)+\frac{f''(a)}{2!}(x-a)^2+\ldots+\frac{f^k(a)}{k!}(x-a)^k$$
kindly help...
• The second is a Taylor polynomial, which sugge... | {} |
# What a loss?
Algebra Level 2
A woman purchased a pair of shoes at $20 whose cost price for shopkeeper(SK-1) was$15. She gave him a $100 note. SK-1 was not having change to return. He took change of$100 from the fellow shopkeeper(SK-2). He came back and returned $80 to woman. In the evening, the SK-2 comes back and ... | {} |
# Precision and Recall Evaluation Metrics in Machine Learning
Precision and Recall are two best known and most misunderstood evaluation metrics in machine learning. In this article we are going to discuss the simplest way in which we can understand them with an example.
Consider that we were playing a simple game onl... | {} |
Practical tips for renovating a house or apartment
# what does delta y mean in physics
Lv 7. A complete explanation follows. Hence it is even used in calculus as dx/dt etc ... 1 ; View Full Answer It simply means a change in . In some cases, this means a difference between two values, such as two points on a line. It... | {} |
# Linear independence of the Covariant Derivative
What's the easiest way to show that the covariant derivative $\nabla U^{\mu}$ is linearly independent to $U^{\mu}$, which is a vector?
I mean I'm assuming they are since I'm proving the second Bianchi identity and my proof requires this to be the case; and I'm quite c... | {} |
# On unique solutions to linear diophantine equations
Let $\sum_{i=1}^k a_ix_i = N$ be the equation with $a_i \in [2^t,2^{t+1}]$ being distinct primes. If we seek unique solutions $x_i\in R_i = (0,a_i)\cap \Bbb Z$, then in general it is not possible.
However, is it possible to divide each interval $R_i$ into $f(k,t)$... | {} |
# Need Help understanding arrays and pointers
This is a discussion on Need Help understanding arrays and pointers within the C++ Programming forums, part of the General Programming Boards category; Hi guys! I have this homework to do and I am not sure how to get this done, so if ...
1. ## Need Help understanding arra... | {} |
# Basic math operations
Basic math operations include four basic operations:
Subtraction (-)
Multiplication (* or x) and
Division ( : or /)
These operations are commonly called arithmetic operations. Arithmetic is the oldest and most elementary branch of mathematics.
In this and other related lessons, we will briefl... | {} |
# State filtering for parameter inference
### Simultaneous inference and estimation by filtering
State filters are cool for estimating time-varying hidden states. How about learning the parameters of the model generating your states? Classic ways that you can do this in dynamical systems include basic linear system i... | {} |
## conditioning an algorithm
Posted in Statistics with tags , , , , , , , , , , , on June 25, 2021 by xi'an
A question of interest on X validated: given a (possibly black-box) algorithm simulating from a joint distribution with density [wrt a continuous measure] p(z,y) (how) is it possible to simulate from the condit... | {} |
Home
>
English
>
Class 12
>
Physics
>
Chapter
>
Jee Mains
>
The parallel combination of tw...
# The parallel combination of two air filled parallel plate capacitor of capacitance C and nC is connected to a battery of voltage, V. When the capacitors are fulley charged, the battery is removed and after that ... | {} |
chapter 12
46 Pages
## Two Multiblock Copolymer Blends
ByZbigniew Roslaniec
I. INTRODUCTION The possibility o f obtaining a homogeneous (one-phase) structure o f blends o f two or more polymers is limited because most macromolecular components are im miscible. According to the classical Flory-Huggins-Scott theory... | {} |
Polar Convex Body
Let $C \subset \mathbb{R}^n$ be a convex body (i.e., full-dimensional, compact) that includes the origin in its interior. Its $polar$ convex body is defined as
$C^\circ = \{ y \in \mathbb{R}^n : \langle y , x \rangle \leq 1, \forall x \in C\}$.
(a) Show that $C^\circ$ is a convex body.
(b) Let $C$... | {} |
# Revision history [back]
I'm not sure how your hostname structure is setup within your network or your puppet configuration. One possible way to do this (depending on your setup, ofc) is via the puppet-sudo module.
With a pretty simple setup you can use the node matching via Regular expressions and that way deploy y... | {} |
Ask Your Question
# Revision history [back]
Root doesn't normally have access to your regular user's display from a terminal, but there are programs you can install that work around this, one of which (my favorite) is beesu. Install it using sudo dnf install -y beesu and then you can run gedit (as an example) with be... | {} |
Quantum Circuit To Compute Any Inner Product
I'm currently reading the paper Classification with Quantum Neural Networks on Near Term Processors
It shows a method to determine the following quantity:
Where U is a unitary operator acting on $$|z,1\rangle$$. The paper states the following:
I am wondering if there is ... | {} |
The prediction of stock price performance is a difficult and complex problem. Multivariate analytical techniques using both quantitative and qualitative variables have repeatedly been used to help form the basis of investor stock price expectations and, hence, influence investment decision making. However, the performa... | {} |
Continuous Bluetooth LE data transfer to iPhone using the RedBear BLE shield
This is an update on our work on creating a bluetooth home health monitor in my class BME 440/441 "Senior Design in Biomedical Engineering". The idea is to create an iPhone app that can connect to several Bluetooth LE sensors (ECG, EEG, Galv... | {} |
Journal topic
Atmos. Chem. Phys., 19, 9595–9611, 2019
https://doi.org/10.5194/acp-19-9595-2019
Atmos. Chem. Phys., 19, 9595–9611, 2019
https://doi.org/10.5194/acp-19-9595-2019
Research article 31 Jul 2019
Research article | 31 Jul 2019
# Observation of absorbing aerosols above clouds over the south-east Atlantic Oce... | {} |
# Sub-center ArcFace: Boosting Face Recognition by Large-scale Noisy Web Faces
Margin-based deep face recognition methods (e.g. SphereFace, CosFace, and ArcFace) have achieved remarkable success in unconstrained face recognition. However, these methods are susceptible to the massive label noise in the training data an... | {} |
# What are the meanings of theta and gamma in this equation?
I'm having a bit of trouble understanding the notation from this paper: http://graphics.cs.aueb.gr/graphics/docs/papers/GraphiCon09_PapadopoulosPapaioannou.pdf
float3 surface = exp(dot(-y, d)) * fromSurface;
float3 viewer = exp(dot(-y, d)) * fromViewer;
flo... | {} |
# Chapter 9 Magnetic Fields Due to Currents
Learning Objectives:
In this chapter you will basically learn:
$$\bullet$$ Learn that for a given point near a wire and a given current-element in the wire, how to determine the magnitude and direction of the magnetic field due to that element.
$$\bullet$$ Learn the the d... | {} |
# Equivalence of definitions of cartesian morphisms
Let $p: C\to D$ be a functor, and let $f:y\to x$ be a morphism of $C$. We say that $f$ is cartesian if the canonical map $Q:(C\downarrow f) \to P:=(C\downarrow x)\times_{(D\downarrow p(x)} (D\downarrow p(f))$ is a surjective (on objects) equivalence of categories. Ho... | {} |
×
## Data Presentation
Data is only as good as how it is presented. How do you take hundreds or thousands of data points and create something a human can understand? Check out the world of charts, graphs, and more.
# Stem-Leaf Plot
How many observations are recorded in the following stem and leaf plot?
$\begin{arr... | {} |
## § Lie bracket versus torsion
This picture finally made the difference between these two things clear. The lie bracket moves along the flow , while the torsion moves along parallel transport . This is why the sides of the parallelogram that measure torsion form, well, a parallelogram: we set them up using parallel t... | {} |
# 02 In-Class Assignment: Vectors¶
What can you solve with $$Ax=b$$?
Image from http://wikipedia.org/
Vector mathematics are used in physics all of the time. Consider the picture at the beginning of this notebook. While the space shuttle is attached to the Airplane they have the same velocity vector. This vector lik... | {} |
#### Archived
This topic is now archived and is closed to further replies.
# Circular Depandancies
This topic is 5332 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.
## Recommended Posts
I could not get rid of them on my exam and I cant get rid of them now. I am... | {} |
# Information Security and Cryptography Research Group
## One-and-a-half quantum de Finetti theorems
### Matthias Christandl, Robert Koenig, Graeme Mitchison, and Renato Renner
Feb 2006, Available at http://arxiv.org/abs/quant-ph/0602130.
We prove a new kind of quantum de Finetti theorem for representations of the ... | {} |
# Hackerrank Solution: Even Odd Query
Original Problem
You are given an array $$A$$ of size $$N$$. You are also given an integer $$Q$$. Can you figure out the answer to each of the $$Q$$ queries?
Each query contains 2 integers $$x$$ and $$y$$, and you need to find whether the value find(x, y) is Odd or Even:
find(i... | {} |
# Chapter 1 - Section 1.4 - Rational Expressions - 1.4 Exercises - Page 43: 15
$\frac{2x+1}{2x-6}$
#### Work Step by Step
First, cancel out like terms and simplify: from: $\frac{5(x-3)(2x+1)}{10(x-3)^{2}}$ to: $\frac{(2x+1)}{2(x-3)}$ then, expand the bracket: $\frac{2x+1}{2x-6}$
After you claim an answer you’ll hav... | {} |
# Fourier transformation - connection between exponential and trigonomeric forms
On Wikipedia i have come across a Fourier transformation equation in exponential form and its inverse (Wiki):
$$\begin{split} \mathcal{F}(x) &= \int\limits^{\infty}_{-\infty}\mathcal{f}(k) \, e^{2 \pi i kx} \, \textrm{d} k\\ \mathcal{f}(... | {} |
# Wednesday, May 14, 2014¶
Tried to solve docs/tickets/97. A real solution would require changes in store.py and elems.py, take much more time than I currently have and would bring unstability.
I finally ended up by simply extending the workaround: the GFK_HACK regular expression used by lino.utils.instantiator.Gener... | {} |
cupcake_queen 2 years ago 7a-3=3-2a solve for a
Bring a's to one side and constants to the other.
2. ChristianGeek
$7a - 3 = 3 - 2a$$7a - 3 + 2a = 3 - 2a + 2a$$9a - 3 = 3$$9a - 3 + 3 = 3 + 3$$9a = 6$$\frac{9a}{9} = \frac{6}{9}$$a = \frac{6}{9}$
3. cupcake_queen
9a-3=3
4. cupcake_queen
oh ok
5. zordoloom
BTW, 6... | {} |
2. ## Re: Range
What have you tried? For example: What's the range of the sinus? and cosinus? ...
3. ## Re: Range
I transcribe it correctly: Find the range of the function
$f(x)=\cos\left(\sin \left(\log\frac{e^{2}+x^{2}}{x^{2}}+1\right)\right )+\sin \left(\cos \left(\log\frac{e^{2}+x^{2}}{x^{2}}+1\right)\right )$
... | {} |
Algebra with fractions is a representation of algebraic expression in simple fraction form as numerator and denominator. In an algebra fraction, when we are adding or subtracting, one thing we need to keep in mind is that it should have a common denominator by cross multiplying.
In this article we will be solving few ... | {} |
# X-axis homing failed with odd results on Tevo Tarantula
I recently finished building my Tevo Tarantula but now I have an issue with homing the X-axis.
I have uploaded MarlinTarantula EasyConfig 2.0.x firmware with Arduino Version 1.8.15 on to the Tevo Tarantula. Whenever I press Home X on the LCD, or by sending the... | {} |
CGAL 5.3 - 2D Arrangements
ArrTraits::Intersect_2 Concept Reference
## Operations
A model of this concept must provide:
OutputIterator operator() (ArrTraits::X_monotone_curve_2 xc1, ArrTraits::X_monotone_curve_2 xc2, Output_iterator &oi)
computes the intersections of xc1 and xc2 and inserts them in an ascending lexi... | {} |
# Q4a) Find the QR factorization the tatrixb) Test Aing the spectral method suitable watrix HOFLS . the guaranteed COMVCTECICE Gauss
###### Question:
Q4a) Find the QR factorization the tatrix b) Test Aing the spectral method suitable watrix HOFLS . the guaranteed COMVCTECICE Gauss Jacobi method for the following *yst... | {} |
# Why is the number of components of Lie group finite?
The following quote is from An Introduction to Lie Group and Lie Algebra by Alexander Kirillov. By "discrete" he means that $|G/G^0|$ is finite. However, according to Introduction to Smooth Manifolds by J. Lee, a topological manifold has countable (not finite in g... | {} |
# Check My Beginner's Guide to Shells, Energy Levels, Subshells, and Orbitals [closed]
I am a beginner trying to summarize what I've learned about:
• Shells
• Energy Levels
• Subshells and
• Orbitals
all at the high school level.
Unlike related threads, I'm going to try to:
1. Define each word and state a few key ... | {} |
##Introduction Problem. Suppose you are in a room with $n$ lightbulbs and $k$ switches, where $1 \leq n$ and $1 \leq k$. Suppose that any particular switch turns a subset of light bulbs on. Find the minimum number of switches such that flipping them on turns on all of the . . . | {} |
University Physics Volume 2
# Challenge Problems
University Physics Volume 2Challenge Problems
### Challenge Problems
123.
A pendulum is made of a rod of length L and negligible mass, but capable of thermal expansion, and a weight of negligible size. (a) Show that when the temperature increases by dT, the period o... | {} |
yscale(value, **kwargs) [source] ¶ Set the y-axis scale. text () is used to place text on the graph. It is better to exchange the X/Y. Base class of all Geoms. Plotting x and y points. Pastebin is a website where you can store text online for a set period of time. Here we'll create a 2 × 3 grid of subplots, where all a... | {} |
# Demand Elasticity, Factor Substitution: Independent?
Given $$Y=f(K,L;\sigma)$$, the effect on labor from a change in the price of capital can be gauged through a substitution effect and a scale effect: \begin{align*} \frac{\partial L}{\partial r} & =\underset{Sub}{\underbrace{\left. \frac{\partial L^{c}}{\partial r}... | {} |
# Is $\sqrt{x/a}+\sqrt{y/b}=1$ the equation of a parabola tangent to the coordinate axes?
Is the below equation represents a parabola that touches the axes of coordinates? $$\sqrt{x/a}+\sqrt{y/b}=1$$
I know it is very stupid to ask this type of easy question here in the forum, but I'm very curious to know. I have sea... | {} |
# Math Help - Help please
Show that 1+tan^2x = (cosx)^-2 where defined.
Don't have a clue what to do.
2. Originally Posted by jumba
Show that 1+tan^2x = (cosx)^-2 where defined.
Don't have a clue what to do.
To prove whether or not
$1+tan^2x=\frac{1}{cos^2x}$
then... either express tanx in terms of cosx, or vice ... | {} |
## Class files
If your projects just won't load up in the editor, first check that scripts aren't blocked on your computer or network. There may also be an issue with browser cookies, especially if you're working on a lot of projects. One of the following may help: Clear your browser's cookies Use the private or inco... | {} |
Impulse response corresponding to differential equation always real?
An important class of linear and time-invariant systems are modeled by linear constant-coefficient differential equations (LCCDEs), i.e.
dnydtn+cn−1dn−1ydtn−1+…+c2d2ydt2+c1dydt=x(t),dnydtn+cn−1dn−1ydtn−1+…+c2d2ydt2+c1dydt=x(t),\frac{d^n y}{dt^n}+c_{n... | {} |
Archive for the ‘polymath’ Category
Frankl’s union-closed conjecture — a possible Polymath project?
January 21, 2016
Although it was from only a couple of people, I had an enthusiastic response to a very tentative suggestion that it might be rewarding to see whether a polymath project could say anything useful about... | {} |
## Precalculus (10th Edition)
$9.56$ square units
By Heron's theorem $K=\sqrt{s(s-a)(s-b)(s-c)}$, where $s=\frac{a+b+c}{2}.$ Hence, $s=\frac{9+6+4}{2}=9.5$. Thus, $K=\sqrt{9.5(9.5-9)(9.5-6)(9.5-4)}\approx9.56.$ | {} |
# How can I remember this definition of gene? (Like hints) A sequence of nucleotides at a given locus along a chromosome.
###### Question:
How can I remember this definition of gene? (Like hints)
A sequence of nucleotides at a given locus along a chromosome.
### Question 12* Which pair of decimals has a sum that is ... | {} |
## Unambiguous “weak” vector valued $L^{+\infty}$ spaces?
For some time, I have been stuck to the problem to be described as follows. The (perhaps not so commonly known) facts given here are taken from R. E. Edwards' Functional Analysis (Holt, Rinehart and Winston 1965) pp. 578−589. Let $I=[0,1]$ with the Lebesgue mea... | {} |
# Python etc / zen of python (PEP-20)
Published: 27 August 2020, 18:00
The famous “Zen of Python” was introduced in PEP-20. This is 19 aphorisms authored by Tim Peters. Do import this in the Python interpreter to see them:
>>> import this
The Zen of Python, by Tim Peters
Beautiful is better than ugly.
Explicit is b... | {} |
# A weaker form of Zariski's connectedness principle
Let $A$ be a complete regular local noetherian ring of dimension $d>1$ and $B$ an $A$-algebra, finite and free as $A$-module. Assume moreover that there exists an open subset $U$ of $\textrm{Spec}\ A$ of primes of height $d-1$ such that there is exactly one prime in... | {} |
# Find the limit as x goes to 0 of [sin^2 Ax]/[cos Ax - 1] *using L'Hopital's Rule?
• Find the limit as x goes to 0 of [sin^2 Ax]/[cos Ax - 1] *using L'Hopital's Rule?
Example 1: Find the limit lim x→0 sin x / x Solution to Example 1: ... are both equal to zero, we can use L'hopital's rule to calculate limit lim x→1 ... | {} |
### Home > CALC > Chapter 7 > Lesson 7.3.4 > Problem7-151
7-151.
1. Multiple Choice: If y = x + sin(xy), then =
Homework Help ✎
1. 1 + cos(xy)
2. 1 + y cos(xy)
Implicit differentiation with the Chain Rule can be messy.
$y'=1+\text{cos}(xy)\left ( y\frac{dx}{dx}+x\frac{dy}{dx} \right )$ | {} |
# zbMATH — the first resource for mathematics
On the convergence of a four-node plate bending element based on Mindlin/Reissner plate theory and a mixed interpolation. (English) Zbl 0589.73068
The mathematics of finite elements and applications V, MAFELAP 1984, Proc. 5th Conf., Uxbridge/Engl. 1984, 491-503 (1985).
[Fo... | {} |
# Find the program that prints this integer sequence (Cops' thread)
• The cop's task is to write a program/function that takes a positive (or non-negative) integer and outputs/returns another integer.
• The cop must state it if the program is intolerant towards zero.
• The cop will provide at least 2 sample inputs/out... | {} |
Miktex amsfont problem: \scriptfont is undefined [duplicate]
Today, After updating Miktex system, I have trouble with error \scriptfont is undefined. So I tried to reinstall Miktex 2.9.4813 (32 bit version). Everything OK, but again after updating, problem is back. I see, that this update related for example file font... | {} |
# Microsoft, Now Loving Hadoop
Last week, OStatic noted the rumor, first reported by VentureBeat, that Microsoft intended to buy Silicon Valley semantic search engine Powerset for $100 million. Lo and behold, Microsoft and Powerset are confirming today that an acquisition agreement has been signed. The terms of the de... | {} |
# Prove following points lie on a circle.
I found this in a textbook without a solution and I wasnt able to solve it myself.
Let ABCD be a tetrahedron with all faces acute. Let E be the mid point of the longer arc AB on a circle ABD. Let F be the mid point of the longer arc BC on a circle BCD. Let G be the mid point ... | {} |
# Forum
Help with beta extr...
Clear all
# Help with beta extraction
Posts: 8
Registered
Topic starter
(@bdalcinbalda)
Active Member
Joined: 2 months ago
Hello,
I have a question about the beta coefficients shown in the output.
I used a GLM with the Gaussian basis function, and I now have 6 different beta coeffi... | {} |
*These starred week numbers are one behind CIT’s week numbers. This is because of the snow.
## Linear Algebra: 20% Test
Will now take place Wednesday 21 March, in Week 7* [21 March].
The test will take place from 19:00-20:30 but most students should be able to complete the test in about an hour. It has about 35 Mark... | {} |
# Is coding multi-line curly braces in text mode possible?
I need to typeset the following document:
I have coded the following
\documentclass[french, a4paper, 10pt]{book}
\usepackage[french]{babel}
\usepackage{fontspec}
\begin{document}
\setlength{\tabcolsep}{1em}
\scriptsize
\section*{\centering \small\sc Tableau... | {} |
## Nihonkai Mathematical Journal
### Simultaneous extensions of Selberg and Buzano inequalities
#### Abstract
We give a simultaneous extension of Selberg and Buzano inequalities: If $y1, y2$ and nonzero vectors $\{ z_i; i = 1, 2, \dots , n \}$ in a Hilbert space $\mathscr{H}$ satisfy the orthogonality condition $\la... | {} |
Related Searches
Definitions
# Marsh test
The Marsh test is a highly sensitive method in the detection of arsenic, especially useful in the field of forensic toxicology when arsenic was used as a poison. It was developed by the chemist James Marsh and first published 1836.
Arsenic, in the form of white arsenic triox... | {} |
$$\require{cancel}$$
# 12.4: Refraction
[ "article:topic", "Snell\u2019s law of refraction", "authorname:crowellb", "index of refraction", "Lens-Maker\u2019s Equation" ]
Economists normally consider free markets to be the natural way of judging the monetary value of something, but social scientists also use question... | {} |
# Place landscape figure on page and in maximum available size
I need to put landscape figure on a separate page of my appendix.
The Code i tried looks like this:
\chapter{Appendix 1}
\begin{figure}[h]
\centering
\rotatebox{90}{\includegraphics[width=\textwidth,height=\textheight,keepaspectratio]{Figure 1}}
\cap... | {} |
# Centroid Problems
To demonstrate this concept, I’ll review a simple example of K-Means Clustering in Python. The centroid of the half-ellipse-shaped-cross-sectional area shown is given by: ус 4. (1) Define. Assignment Problems Notice. It seeks to identify the origin of a problem. The centroid of a shape is the arith... | {} |
## Performance Measures in Electric Power Networks under Line Contingencies
14 May 2019 · Coletta Tommaso, Jacquod Philippe ·
Classes of performance measures expressed in terms of ${\cal H}_2$-norms have been recently introduced to quantify the response of coupled dynamical systems to external perturbations. So far... | {} |
# Munn tree
Let $X$ be a finite set, and $\left(X\amalg X^{-1}\right)^{\ast}$ the free monoid with involution on $X$. It is well known that the elements of $\left(X\amalg X^{-1}\right)^{\ast}$ can be viewed as words on the alphabet $\left(X\amalg X^{-1}\right)$, i.e. as elements of the free monod on $\left(X\amalg X^{... | {} |
# Help in factorization of a third degree polynomial
Gold Member
## Homework Statement
Looking to factor $-2x^3-3$ and having an issue. To my understanding, the Fundamental Theorem of Algebra tells us that it is at least theoretically possible to factor any polynomial of degree n.
## The Attempt at a Solution
So m... | {} |
(50g) Euler Transform - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Software Libraries (/forum-10.html) +--- Forum: General Software Library (/forum-13.html) +--- Thread: (50g) Euler Transform (/thread-12610.html) (50g) Euler Transform - John Keith - 03-12-2019 10:17 PM Following are p... | {} |
# Similarity-first search: A new algorithm with application to Robinsonian matrix recognition
Monique Laurent, Matteo Seminaroti
Research output: Contribution to journalArticleScientificpeer-review
6 Citations (Scopus)
## Abstract
We present a new efficient combinatorial algorithm for recognizing if a given symmet... | {} |
# gsubfn v0.7
0
0th
Percentile
## Utilities for Strings and Function Arguments
The gsubfn function is like gsub but can take a replacement function or certain other objects instead of the replacement string. Matches and back references are input to the replacement function and replaced by the function output. gsub... | {} |
# Calculate the amount of heat evolved in the complete oxidation of "8.17 g" of "Al" (M_M = "26.98 g/mol") at 25^@"C" and "1 atm" pressure?
## a 101 kJ b 127 kJ c 203 kJ d 237 kJ e 254 kJ DeltaH_f^@("Al"_2"O"_3(s)) = -"1676 kJ/mol" $4 {\text{Al"(s) + 3"O"_2(g) -> 2"Al"_2"O}}_{3} \left(s\right)$
Apr 3, 2018
$\text{25... | {} |
# Kinematic problem (initial acceleration) [closed]
A ball is rolling over a soccer field with constant velocity $V_{b} > 0$ at an angle of 45° to the goal line. It starts at the corner of the field (distance $d$ beside the middle of the goal line) at the time $t_0 =0$. At the same time a player starts heading towards... | {} |
# How to calculate cubic spline coefficients from end slopes
I want to know how to calculate cubic spline interpolation coefficients, which uses end point slope constraint.
There are $N$ points $(x_0,y_0),(x_1,y_1),\dots,(x_{N-1},y_{N-1}) \in \mathbb{R}^2$ where $x_0 < x_1 < \cdots < x_{N-1}$. Cubic spline interpolat... | {} |
## Define Depreciation
### Learning Outcomes
• Define accounting depreciation and differentiate from economic definition
In economics, the term depreciation represents a loss in value, usually due to either wear and tear or obsolescence (in contrast, the term appreciation refers to an increase in value). Usually, th... | {} |
# Is there a reference for "computing $\pi$" using external rays of the Mandelbrot set?
I was recently reminded of the following cute fact which I will state as a proposition to fix notation:
Proposition Given $\epsilon > 0$, let $c = -3/4 + \epsilon i \in \mathbb{C}$ and $q_c(z) = z^2 + c$. Define the sequence of po... | {} |
# Hamiltonian simulation with complex coefficients
As part of a variational algorithm, I would like to construct a quantum circuit (ideally with pyQuil) that simulates a Hamiltonian of the form:
$$H = 0.3 \cdot Z_3Z_4 + 0.12\cdot Z_1Z_3 + [...] + - 11.03 \cdot Z_3 - 10.92 \cdot Z_4 + \mathbf{0.12i \cdot Z_1 Y_5 X_4}$... | {} |
D. Inversion Counting
time limit per test
2 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output
A permutation of size n is an array of size n such that each integer from 1 to n occurs exactly once in this array. An inversion in a permutation p is a pair of indices (i, j) such that i... | {} |
## FANDOM
1,800 Pages
Governor's Residence
Function:
Mitigation of corruption
Requirements:
Expansion ()
Can only be built in a colony
Expansion requirements:
Use requirements:
None
## Building Information
A governor in your colony guarantees that all the daily administrative tasks are done properly and lowers the... | {} |
# CAN bus reverse-engineering
I am struggling with CAN bus reverse-engineering. It might be a silly question, but it irritates me.
These are traffics that arise from pressing buttons A and B which is lifting up the 1. Axis of the robot at the end.
Pressing down button A changes the value "09" in 181h node and button... | {} |
# Testrunner binary not available
Hello,
when trying to run the public tests I encounter the following error.
I’ve already implented all functions and haven’t made any changes to the test files.
I also applied the patch only after completing the first few functions.
This is the output of make check?
Try to delete t... | {} |
## Thomas' Calculus 13th Edition
Published by Pearson
# Chapter 8: Techniques of Integration - Section 8.3 - Trigonometric Integrals - Exercises 8.3 - Page 462: 26
#### Answer
$$\int_{0}^{\pi} \sqrt{1-\cos ^{2} \theta} \mathrm{d} \theta=2$$
#### Work Step by Step
Given $$\int_{0}^{\pi} \sqrt{1-\cos ^{2} \theta} \... | {} |
# Warning someone that they have been suckered into a scam
A friend of mine (let's call her Anne) was recently drawn into attending life-coaching sessions, through an organization which is a scam based on the Lifespring model (tl;dr they give you a psychological high, and then make you pay $to attend training sessions... | {} |
# Tag Info
15
It probably is a dwarf planet. (It almost certainly is a dwarf planet.) The naming procedures at the IAU are that "Objects that have an absolute magnitude (H) less than +1 [...] are overseen by two naming committees, one for minor planets and one for planets. [...] All other bodies are named by the mino... | {} |
## Thursday, July 23, 2015
### Solve in positive integers the equation $ab(a+b-10)+21a-3a^2+16b-2b^2=60$: First Solution (Continued)
I want to apology for posting the unfinished blog post on last Saturday (solve-in-positive-integers-equation.html), and I am truly sorry for that.
Here is the other part of the solutio... | {} |
# Coin weighing puzzle
We have 5 boxes with 20 coins each. And coins of three boxes weigh 10, one of them weighs 9 and the other weighs 11. How can we differentiate between them by using a scale(digital, not the one with two cups) only once, with 1 unit accuracy?
• Weigh them? shrugs This puzzle needs more restrictio... | {} |
# What is the remainder when 1!+2!+3!+4!+5!+…+50! is divided by 5!?
What is the remainder when 1!+2!+3!+4!+5!+.......+50! is divided by 5!
My Approach
$1$+$2$+$6$+$24$+$5$!/$5$!+$6 . 5$!/$5$!+$7$ .$6$ . $5$!/$5$!....so on
$33$+$1$+$6$+$42$+......
I am not getting the correct answer as the solution is getting compl... | {} |
# Is “indeterminate” a better name than “indifferent” for neutral fixed-points?
let $f(t)=t$ be an analytic function which has a fixed-point at $t$. The multiplier $\lambda (t) = f'(t)$ is just the 1st derivative evaluated at the fixed-point. The standard nomenclature is that when $\| \lambda (t) \|=1$ the fixed-point... | {} |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.