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## Calculating Initial Amount given Rate and k
Simaran Dosanjh 3E
Posts: 26
Joined: Fri Sep 25, 2015 3:00 am
### Calculating Initial Amount given Rate and k
Given the rate and k and the molar mass of an unknown species, how do I find the initial amount of the species in grams?
We are also given that he added the ini... | {} |
1. ## inhomogenous eqn
Does anyone know how to solve $\frac{d^2y}{dx^2}+2\frac{dy}{dx}+2y=10exp(-x)sinx$ thnx
2. Originally Posted by oxrigby
Does anyone know how to solve $\frac{d^2y}{dx^2}+2\frac{dy}{dx}+2y=10exp(-x)sinx$ thnx
First solve the homogenious equation. The auxillary equation is
$m^2+2m+2=0 \iff m^2+2m... | {} |
# Consider the following statements in respect of class intervals of grouped frequency distribution: 1. Class intervals are mutually exclusive. 2. Class
48 views
closed
Consider the following statements in respect of class intervals of grouped frequency distribution:
1. Class intervals are mutually exclusive.
2. C... | {} |
# How to deduce a linear system's impulse response from a set of input/output signals?
I want to know how to solve those types of problems.. is it by inspection ?
Consider the linear system below. When the inputs to the system $x_1[n]$, $x_2[n]$ and $x_3[n]$, the responses of the systems are $y_1[n]$, $y_2[n]$ and $y... | {} |
# Multi-Objective Covariance Matrix Adaptation Evolution Strategy¶
The multi-objective covariance matrix adaptation evolution strategy (MO-CMA-ES) is one of the most powerful evolutionary algorithms for multi-objective real-valued optimization. In Shark, we provide a reference implementation of the algorithm (see MOCM... | {} |
000160775 001__ 160775
000160775 005__ 20181203022215.0
000160775 0247_ $$2doi$$a10.4171/JEMS/130
000160775 02470 $$2ISI$$a000257869200008
000160775 037__ $$aARTICLE 000160775 245__$$aHorocyclic products of trees
000160775 269__ $$a2008 000160775 260__$$c2008
000160775 336__ $$aJournal Articles 000160775 520__$$aLet T-... | {} |
## Universal locally finite central extensions of groups.(English)Zbl 0582.20022
An interesting new class of locally finite simple groups is studied; they generalize the well-known locally finite groups introduced by P. Hall [J. Lond. Math. Soc. 34, 305-319 (1959; Zbl 0088.023)]. The starting point is a periodic abeli... | {} |
# Bash script to batch rename files
This is my homebrew bash script for batch renaming files extensions (my music library needs organizing):
#!/bin/bash
# rext.sh
# Syntax: rext.sh EXT1 EXT2
# Batch rename any file in current directory with extension of EXT1 to EXT2
EXT1=$1 EXT2=$2
for f in *.$EXT1 do fname=${f%.*... | {} |
# What is an intuitive view of adjoints? (version 1: category theory)
In trying to think of an intuitive answer to a question on adjoints, I realised that I didn't have a nice conceptual understanding of what an adjoint pair actually is.
I know the definition (several of them), I've read the nlab page (and any good a... | {} |
# Malus Law - Cosine squared term?
by Dart82
Tags: cosine, malus, squared, term
P: 291 I simply tell my students that once upon a time, they wrote it as (sinx)^2, but lazy students kept leaving off the parenthesis and wrote sinx^2, sometimes meaning to take the sine of x, then square that answer; other times meaning ... | {} |
# English or French translation of Gauss' “Summatio Quarumdam Serierum Singularium”
I'm interested in looking at the details of Gauss' method of determining the sign of the Gauss sum in his "Summatio Quarumdam Serierum Singularium", and I was wondering if anyone knew if there was an English or French translation avail... | {} |
# Probably simple C++ question
This topic is 3920 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.
## Recommended Posts
I an trying to input a variable with type double but don't know how to check to make sure the input is double and not something else. Could someo... | {} |
1. ## Related rates problem
Hello, i'm not exactly sure how to do this one.
Water is draining for a conical filter into a cylindrical cup at the rate of 10 cubic centimeters per minute. The conical filter measures 10 cm tall and 10 cm across its top. The diameter of the cylindrical cup is 15 cm.
(a) How fast is the ... | {} |
Utku Olcar
is open to work
Job titles
Robotics Engineer · Robotics Software Engineer · Robotics Specialist · Mechatronics Engineer · Embedded Software Engineer
Start date
Immediately, I’m actively applying
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I have a virtually created Stewart Platform that is des... | {} |
# Latex Beamer Madrid theme - how to get smoothbars in the footer not header?
How do I create a custom beamer style where my header contains only the title of the slide, and my footer - the smoothbars "dots" style of how far the presentation has progressed, i.e.
(((TITLE)))
Frame content
(((what you get above the t... | {} |
# Let’s make a DQN: Double Learning and Prioritized Experience Replay
### Introduction
Last time we implemented a Full DQN based agent with target network and reward clipping. In this article we will explore two techniques, which will help our agent to perform better, learn faster and be more stable – Double Learning... | {} |
GMAT Question of the Day - Daily to your Mailbox; hard ones only
It is currently 22 Jan 2019, 01:11
### 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... | {} |
# Abstract Cauchy problem
The condensed formulation of a Cauchy problem (as phrased by J. Hadamard) in an infinite-dimensional topological vector space. While it seems to have arisen between the two World Wars (F. Browder in [a2], Foreword), it was apparently introduced as such by E. Hille in 1952, [a2], Sec. 1.7.
Na... | {} |
# Tag Info
0
Some history here might be useful; one of the oldest cosmological theories that we have was developed by Ionian philosophers which was an atomic theory; in that theory uncertainty as in random motion was taken as something fundamental (they called it the clinamen which is usually translated as swerve). T... | {} |
# Entropy and Fractal Dimension ¶
In the study of dynamical systems there are many quantities that identify as "entropy". Notice that these quantities are not the more commonly known thermodynamic ones, used in Statistical Physics. Rather, they are more like the to the entropies of information theory, which represents... | {} |
# Math Help - Coin problem
1. ## Coin problem
I flip a symmetrical coin n times and I'm interested to know the expectation value of event A (the most probable number of times event happens), which is defined as fliping head m times in a row (m<=n). It is important to know that, for example m=10, fliping 20heads in a ... | {} |
What is the best BASIC Pocket Computer
02-28-2019, 12:33 AM (This post was last modified: 03-01-2019 04:01 AM by Valentin Albillo.)
Post: #121
Valentin Albillo Senior Member Posts: 885 Joined: Feb 2015
RE: What is the best BASIC Pocket Computer
.
Hi, Csaba:
(02-27-2019 09:21 AM)Csaba Tizedes Wrote: This is identical... | {} |
# Simple Harmonic Motion proof
1. Feb 18, 2015
### Cpt Qwark
1. The problem statement, all variables and given/known data
Prove that:
$$x=8sin2t+6cos2t$$ is undergoing S.H.M.
(Not too sure about how to prove for solution.)
2. Relevant equations
Solution for S.H.M. $$x=asin(nt+α)$$ is $$\frac{d^{2}x}{dy^{2}}=-n^2x$$
... | {} |
# Areas and perimeters of sectors (degrees)
Lesson
Like we saw in our chapters describing circumferences and areas of circles we now have the following rules.
$\text{Circumference, C}=2\pi r$Circumference, C=2πr
$\text{Area, A}=\pi r^2$Area, A=πr2
What if we don't have an entire circle?
Well, half a circle would ... | {} |
Language: Search: Contact
Zentralblatt MATH has released its new interface!
For an improved author identification, see the new author database of ZBMATH.
Query:
Fill in the form and click »Search«...
Format:
Display: entries per page entries
Zbl 1214.34059
Baštinec, J.; Dibl{\'\i}k, J.; Khusainov, D.Ya.; Ryvolová,... | {} |
# Selecting objects to maximize value while under multiple constraints
I think it will be best to explain the problem first and then explain what I am thinking:
I have a dataset similar to the following:
fruit,calories,cost
apple,100,1
apple,200,1.5
apple,150,2
pear,300,3
pear,100,.5
pear,250,2
orange,100,1
orange,1... | {} |
# Base Equation
Find the value of $$n$$ such that the following equality holds:
$\large\overline{(n-1) (n-2) (0)}_n = \overline{(n-2) (n-3) (1)}_{n+1}, \qquad |n| > 3$
Clarification: The subscript indicates number base. $$(n-1),(n-2), (0),\ldots$$ are digits of the number.
× | {} |
Screenshots. φ [ν←τ] where τ is free for ν in φ. Since this is all about math, I copy some content from wikipedia for a start. for details. A first prototype of a ProB Logic Calculator is now available online. You need to “summarize” what was established after making the desired assumption (the contradiction of the con... | {} |
# Refresh an F-curve with Python after changing Extrapolation Mode [closed]
After creating an F-curve for the default cube and then setting the Extrapolation Mode to 'LINEAR', the graph editor displays a very strange curve:
The script I ran in the Text Editor of a new .blend file was:
import bpy
obj = bpy.context.o... | {} |
# Looks like Afghanistan is in Taliban hands...or VERY soon to be
## Recommended Posts
41 minutes ago, Peterkin said:
Of course he's struggling. Each new president inherits the bass-ackward incompetence and crappy decisions of the six or seven preceding administrations, and the same brass-bound, uncommunicative, rec... | {} |
Fast Algorithms for Demixing Sparse Signals from Nonlinear Observations
# Fast Algorithms for Demixing Sparse Signals from Nonlinear Observations
Electrical and Computer Engineering Department
Iowa State University
This work was supported in part by the National Science Foundation under the grant CCF-1566281. Parts o... | {} |
应用概率统计
Office Online
Journal Online
Current Issue
2022 Vol.38 Issue.1,Published 2022-02-24 article
article
1 Bankruptcy Probability of a Lever Company: Lookback Option Pricing Method YANG Zhaoqiang; TIAN Yougong This paper constructs the assets portfolio of lever corporation by the structural approach. Because ... | {} |
# Properties
Label 70.2.e.a Level $70$ Weight $2$ Character orbit 70.e Analytic conductor $0.559$ Analytic rank $0$ Dimension $2$ CM no Inner twists $2$
# Related objects
## Newspace parameters
Level: $$N$$ $$=$$ $$70 = 2 \cdot 5 \cdot 7$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 70.e (of order... | {} |
# Complex number 1!
Algebra Level 5
If $$x = 2+5i$$ and $$\large 2(\frac{1}{1!9!} +\frac{1}{3!7!}) + \frac{1}{5!5!} = \frac{2^a}{b!}$$ , then the value of $$(x^3 -5x^2 +33x -19)$$ is equal to
× | {} |
Justice and Fairness: Part 2
A friend of yours was part of a secret society and was put on trial on 15 December 2014 without a lawyer. Alice encrypted the trial's transcript and sent it to Bob, but double agent Carol was able to e-mail a copy of the ciphertext to you. Your friend desperately needed help from a lawyer,... | {} |
• Create Account
# Marching Cube Holes
Old topic!
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### #1Tapped Members - Reputation: 384
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Dynamic reconfigure of gmapping parameters
Hello all,
I'd like to change the gmapping parameters namely xmin, ymin, xmax, ymax dynamically. My first thought was to use the dynamic_reconfigure package, but it seemed that it requires changing the source code of the gmapping.
My second thought was to use system calls f... | {} |
## CryptoDB
### Paper: Fuzzy Extractors: How to Generate Strong Keys from Biometrics and Other Noisy Data
Authors: Yevgeniy Dodis Rafail Ostrovsky Leonid Reyzin Adam Smith URL: http://eprint.iacr.org/2003/235 Search ePrint Search Google We provide formal definitions and efficient secure techniques for -- turning nois... | {} |
There is no Press for this Ticker
Related Companies
TickerCompanyChg %Mkt Cap
FPAC/UFar Peak Acquisition Corporation Units, each consisting of one Class A ordinary share, and one-third of one redeemable warrant0.1%
Far Peak Acquisition Corporation Units, each consisting of one Class A ordinary share, and one-third o... | {} |
# 1.10: Summing Up, Looking Ahead
[ "article:topic", "authorname:learykristiansen" ]
$$\newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} }$$
$$\newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}}$$
What we have tried to do in this first chapter is to introduce ... | {} |
# Double Exponential Piecewise Pulse
Define a double exponential piecewise time pulse.
Time axis unit
Specify the unit to be used for the time axis.
Total signal duration ( ${s}_{\text{d}}$ )
The total length of the signal in the specified units.
Amplitude ( ${u}_{0}$ )
The amplitude of the time signal.
Pulse delay (... | {} |
Corpus ID: 235458102
# Higher-order topological insulators from $3Q$ charge bond orders on hexagonal lattices: A hint to kagome metals
@inproceedings{Lin2021HigherorderTI,
title={Higher-order topological insulators from \$3Q\$ charge bond orders on hexagonal lattices: A hint to kagome metals},
author={Yu-Ping Lin},
y... | {} |
# Kerodon
$\Newextarrow{\xRightarrow}{5,5}{0x21D2}$ $\newcommand\empty{}$
Go back to the page of Corollary 2.2.1.15.
Comment #86 by Carles Sáez on
A pair of typos: In the square, the lower left element should be $e$ instead of $e \circ (e \circ e)$. In the last line, it should say: "since it is isomorphic to the id... | {} |
#elisp
However, note that length should not be used for computing the width of a string on display; use string-width (see Size of Displayed Text) instead.
If you want to change selection, open document below and click on "Move attachment"
GNU Emacs Lisp Reference Manual: String Basics
u can operate on them with the ge... | {} |
#### State whether the statement is true or false :Fraction $\frac{18}{39}$ is in its lowest form.
False
$\frac{18}{39} = \frac{6}{13}$
Hence Fraction $\frac{18}{39}$ is not in its lowest form. | {} |
# Risk glossary
## Critical day option
An option structure used for weather derivative transactions where the option payoff is based on defined critical conditions being met for a specified number of days. | {} |
# Inference and Estimation: The Big Picture¶
• Limits
• Limits of Sequences of Real Numbers
• Limits of Functions
• Limit of a Sequence of Random Variables
• Convergence in Distribution
• Convergence in Probability
• Some Basic Limit Laws in Statistics
• Weak Law of Large Numbers
• Central Limit Theorem
### Inference... | {} |
# What is difference between H⁺ and proton?
What is difference between $\ce{H+}$ and a proton?
• Do you think there should be any difference? – bon Sep 8 '15 at 20:27
There is no chemical difference, only a psychological one: how do you think about it. They are both the same thing, but many people associate $\ce{H+}... | {} |
# How do you find the derivative of root5(x^-5)?
$\frac{d \left(\sqrt[5]{{x}^{- 5}}\right)}{\mathrm{dx}} = - \frac{1}{x} ^ 2$
$\sqrt[5]{{x}^{- 5}} = {\left({x}^{- 5}\right)}^{\frac{1}{5}} = {x}^{\left(- 5\right) \times \left(\frac{1}{5}\right)} = {x}^{-} 1$
As $\frac{d \left({x}^{-} 1\right)}{\mathrm{dx}} = - 1 \cdot ... | {} |
# Think Bayes
This notebook presents example code and exercise solutions for Think Bayes.
In [1]:
# Configure Jupyter so figures appear in the notebook
%matplotlib inline
# Configure Jupyter to display the assigned value after an assignment
%config InteractiveShell.ast_node_interactivity='last_expr_or_assign'
# ... | {} |
# NAG CL Interfacef12fec (real_symm_monit)
Note: this function uses optional parameters to define choices in the problem specification. If you wish to use default settings for all of the optional parameters, then the option setting function f12fdc need not be called. If, however, you wish to reset some or all of the... | {} |
# 2nd fundamental theorem of calculus chain rule
0
1
Let F be any antiderivative of f on an interval , that is, for all in .Then . Fundamental theorem of calculus - Application Hot Network Questions Would a hibernating, bear-men society face issues from unattended farmlands in winter? %PDF-1.4 The Chain Rule and the ... | {} |
# User talk:ElPoojmar
## Welcome!
Hello, ElPoojmar, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are a few links to pages you might find helpful:
Please remember to sign your messages on talk pages by typing four tildes (~~~~); this will automatically... | {} |
# Error in PSTricks
Why does this code produce an error and how to fix it?
By the way, I use Texmaker in MikTeX.
\documentclass[10pt]{article}
\pagestyle{empty}
\usepackage{pst-func}
\begin{document}
\psset{xunit=1.0cm,yunit=1.0cm,algebraic=true,dimen=middle,dotstyle=o,dotsize=5pt 0,linewidth=0.8pt,arrowsize=3pt 2,a... | {} |
January 22, 2021, 11:16:18 PM
Forum Rules: Read This Before Posting
### Topic: Standard Deviation Equation (Read 82610 times)
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#### tunelling
• Very New Member
• Posts: 1
• Mole Snacks: +1/-0
##### Standard Deviation Equation
« on: January 03, 2009, 07:37:13 PM »
Hi,
I... | {} |
# Difference between revisions of "Inference Rules"
CAUTION! Any modification to this page shall be announced on the User mailing list!
Conventions used in these tables are described in The_Proving_Perspective_(Rodin_User_Manual)#Inference_Rules.
Name Rule Side Condition A/M
*
HYP
$\frac{}{\textbf{H},\textbf{P} \;... | {} |
## Calculus: Early Transcendentals 8th Edition
$22 J$
The work done in moving the object can be calculated as: $W=\int_c F \cdot T ds \approx \Sigma_{i=1}^{7} [F(x_i,y_i) \cdot (x_i,y_i)]ds]$ or, $W=(2+2+2+2+1+1+1) \cdot 2 \approx 22 J$ Therefore, we estimate the work done is $22 J$. | {} |
## Small Worlds
Some social networks have become very accessible for systematic investigations, as they manifest themselves in a digital form on the internet. One such example of a social network that is accessible online is maintained by the American Mathematical Society (AMS) as part of MathSciNet, a database of mat... | {} |
# [Tugindia] Problem with Omega Malayalam
Alex A.J. indictex at gmail.com
Fri Aug 28 12:39:28 CEST 2009
On Sat, Aug 22, 2009 at 12:55 AM, P. P. Narayanaswami<swami at mun.ca> wrote:
> I had another problem with Malayalam Omega as well as Tamil Omega,
> where I had to use Landscape Mode. This I posted sometime back t... | {} |
# Setting value of controller controls for domain objects with Reflection
Is my use of Java Reflection an OK design?
Each domain object contains an annotation to declare what controller would be initialized to edit/create the object:
Each field of the domain object has an annotation to declare what control in the sp... | {} |
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# Solve the product power $\left(7\sqrt[3]{x^{2}}\sqrt{xy^{121\cdot -1}}\right)^4$
## Step-by-step Solution
Go!
Go!
1
2
3
4
5
6
7
8
9
0
a
b
c
d
f
g
m
n
u
v
w
x
y
z
.
(◻)
+
-
×
◻/◻
/
÷
2
e
π
ln
log
log
lim
d/dx
Dx
|◻|
θ
=
>
<
>=
<=
sin
cos
tan
cot
sec
csc
asin
acos
atan
a... | {} |
# Gauge transformation which counteract wave function
1. May 5, 2015
### exponent137
Gauge transformation can be written as:
$\psi(\vec{r},t)\rightarrow e^{-i \frac{e}{\hbar c}f(\vec{r},t)}\psi(\vec{r},t)$
http://quantummechanics.ucsd.edu/ph130a/130_notes/node296.html
Does it have any sense that we choose such funct... | {} |
# Proceedings
Latest additions:
2018-07-3110:12 [GSI-2018-00838] Proceedings et al FAIRNESS 2017 : 28 May-3 June 2017, Sitges, Spain FAIRNESS 2017, SitgesSitges, Spain, 28 May 2017 - 3 Jun 2017 Bristol [u.a.] : IOP Publishing getrennte Zählung (2018) zugl.: Journal of Physics: Conference Series, Vol. 1024, 2018 GSI/F... | {} |
Aftermath of the Nigerian civil war (1967-1970): The struggle for peaceful coexistence between parties in post-war Nigeria
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Aftermath of the Nigerian civil war (1967-1970): The struggle for peaceful coexistence between parties in post-war Nigeria
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PII
S032150750015266-4-1
Public... | {} |
Proof See 23 Is it possible to describe compactly Volterra points In this
# Proof see 23 is it possible to describe compactly
• Homework Help
• 7
This preview shows page 3 - 5 out of 7 pages.
Proof. See [23]. Is it possible to describe compactly Volterra points? In this context, the results of [11] are highly relev... | {} |
# 5.3: DeMoivre’s Theorem and Powers of Complex Numbers
$$\newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} }$$
$$\newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}}$$
Focus Questions
The following questions are meant to guide our study of the material in this... | {} |
# How to Find the Volume of Cones and Pyramids? (+FREE Worksheet!)
In this article, you will learn how to find Volumes of Cones and Pyramids in a few simple steps.
## Step by step guide to Find Volume of Cones and Pyramids
A cone is a three-dimensional geometric figure that has a flat surface and a curved surface po... | {} |
# How to use arrows to separate rows or columns of a table
How can I use an arrow as a substitute for \hline to create the appearance of an $x$ axis in a table? How would one add an axis name to this line? How do I create a similar feature for the vertical separator line? What can I use instead of say c|c to make a ve... | {} |
- Current Issue - Ahead of Print Articles - All Issues - Search - Open Access - Information for Authors - Downloads - Guideline - Regulations ㆍPaper Submission ㆍPaper Reviewing ㆍPublication and Distribution - Code of Ethics - For Authors ㆍOnlilne Submission ㆍMy Manuscript - For Reviewers - For Editors
On quasi-rigid i... | {} |
# All Questions
1,673 questions
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### Is it appropriate to ask why a textbook on nonlinear algebra not well known?
I am wondering if it would be worthwhile to ask why a certain textbook and/or its authors (Dolotin and Morozov) are not well known. From the description of the bo... | {} |
An algorithm for finding connected convex subgraphs of an acyclic digraph
Gregory Gutin, A Johnstone, J Reddington, E Scott, A Soleimanfallah and A Yeo
In: ACiD 2007, Monday 17 September - Wednesday 19 September 2007, Durham, UK.
## Abstract
A subgraph $H$ of an acyclic digraph $D$ is convex if there is no directed p... | {} |
I1= (40mA)(5KΩ || 15KΩ)/(5KΩ)= 30mA, The current which goes through the branch having It only takes a minute to sign up. A current divider circuit is a circuit in which the main current from the power source is In this article, we will go over what a current divider circuit is, how current divides up in a circuit, and ... | {} |
## Some potential theoretic results on an infinite network.(English)Zbl 1128.31002
Aikawa, Hiroaki (ed.) et al., Potential theory in Matsue. Selected papers of the international workshop on potential theory, Matsue, Japan, August 23–28, 2004. Tokyo: Mathematical Society of Japan (ISBN 4-931469-33-7/hbk). Advanced Stud... | {} |
## anonymous one year ago ques
1. anonymous
What are torsional oscillations??I want to know this for an assignment but a google search only gave me something about torsional vibrations, is it the same thing?
2. anonymous
and no my books don't mention anything about it :p
3. IrishBoy123
like twisting a rod think r... | {} |
Faculté des sciences économiques et sociales
## A flexible prior distribution for Markov switching autoregressions with Student-t errors
### In: Journal of Econometrics
This paper proposes an empirical Bayes approach for Markov switching autoregressions that can constrain some of the state-dependent parameters (regr... | {} |
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# The function $f(x)=\large\frac{ln(1+ax)-ln(1-bx)}{x}$ is not defined at $x=0$. The value which should be assigned to $f$ at $x=0$ so that it is continuous at $x=0$ is
$(a)\;a-b\qquad(b)\;a+b\qquad(c)\;ln a-ln b\qquad(d)\;None\;of\;these$
For $f(x)$ to be continuous at x=0
$f(0)=\lim\limits_{x\to 0... | {} |
## The Verbosity Difference
I like conciseness. Syntactic sugar increases the amount of code I can fit on a single screen, which increases the amount of code I can read without scrolling. Eye saccades are a hell of a lot faster than keyboard scrolling, so not having to scroll is a good thing. However, I recently reali... | {} |
# Negative mass Schwarzschild
#### LAHLH
Hi,
If you look at the Schwarzschild geodesics for negative mass, I believe that radial null rays can hit the naked singularity in finite value of affine parameter? but if L <>0 then the null rays get repelled away from r=0 no matter what their energy?
does this mean the spa... | {} |
What are the types of pseudopotentials?
I would like to know what are the different types of pseudopotentials, the pro and cons, and what properties can/cannot be calculated with them?
Summary of the "milestone" pseudopotential (PP) papers
Since it wasn't available anywhere & took me a few hours, it's an answer rath... | {} |
Volume 12, Issue 3
Optimal Convergence Rates in Time-Fractional Discretisations: The ${\rm L1}$, $\overline{{\rm L1}}$ and Alikhanov Schemes
East Asian J. Appl. Math., 12 (2022), pp. 503-520.
Published online: 2022-04
Cited by
Export citation
• Abstract
Consider the discretisation of the initial-value problem $D^α... | {} |
# Prove trace of matrix: Tr(AB) = Tr(BA)
Tags:
1. Aug 4, 2017
### DrMCoeus
1. The problem statement, all variables and given/known data
The trace of a matrix is defined to be the sum of its diaganol matrix elements.
1. Show that Tr(ΩΛ) = Tr(ΩΛ)
2. Show that Tr(ΩΛθ) = Tr(θΩΛ) = Tr(ΛθΩ) (the permutations are cyclic)
... | {} |
# nLab compact closed category
### Context
#### Monoidal categories
monoidal categories
## With traces
• trace
• traced monoidal category?
# Contents
## Definition
A compact closed category, or simply a compact category, is a symmetric monoidal category in which every object is dualizable, hence a rigid symmet... | {} |
# Don’t Panic!
I’m loving today’s Google Doodle for Douglas Adams’ birthday:
He would have been 61 today.
# The Bang-bang Command
Besides from the fact that saying “bang bang” makes me think of Quentin Tarantino (because of Bang bang → Nancy Sinatra → Kill Bill), which makes it already a hyper-classy command, I lov... | {} |
`ISRN AlgebraVolume 2012 (2012), Article ID 205478, 14 pageshttp://dx.doi.org/10.5402/2012/205478`
Research Article
## The Matrix Linear Unilateral and Bilateral Equations with Two Variables over Commutative Rings
Pidstryhach Institute for Applied Problems of Mechanics and Mathematics, National Academy of Sciences of... | {} |
Under the auspices of the Computational Complexity Foundation (CCF)
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Paper:
TR19-128 | 24th September 2019 05:58
Lower Bounds for (Non-monotone) Comparator Circuits
TR19-128
Authors: Anna Gal, Robert Robere
Publication: 24th September 2019 05:59
Downloads: 1040
Keywords:
Abstract:
Comparator cir... | {} |
# Subsetting from seurat object based on orig.ident?
I am pretty new to Seurat. I want to subset from my original seurat object (BC3) meta.data based on orig.ident. however, when i use subset(), it returns with Error.
ER_HER_P <- subset(BC3, idents = c("BC03"))
Error: No cells found
table(Idents(BC3))
BC01 BC02 ... | {} |
# Can you find the next entry in this sequence ?
Find a rule that applies for the first six entries and add at least one more.
I
do
take
20,000¥
recompensations
The rule is simple.
Each individual entry has multiple valid solution, this is just one such set. The fact that the next entry is longer than the ... | {} |
# Lambert's Cosine Law - Simple algebraic rearrangement problem [closed]
Let $I(x,y)$ be the intensity at position $(x,y)$, $\rho(x,y)$ be the albedo at this point (a constant), $n=(p,q,1)$ be the surface gradient vector and $s_{0},s_{1},s_{2}$ all be vectors from the point to $(x,y)$.
Assume that $I(x,y)=I_{1}$ when... | {} |
# Clustering With K-Means in Python
A very common task in data analysis is that of grouping a set of objects into subsets such that all elements within a group are more similar among them than they are to the others. The practical applications of such a procedure are many: given a medical image of a group of cells, a ... | {} |
# Institut for Matematik
## Reconstruction of singular and degenerate inclusions in Calderón's problem
Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review
We consider the reconstruction of the support of an unknown perturbation to a known conductivit... | {} |
Adding an edge to a maximal planar graph results in topological minors of both $K_5,K_{3,3}$.
I was trying to prove this exercise from Diestel's book:
Show that adding a new edge to a maximal planar graph of order at least 6 always produces both a $$TK_5$$ and a $$TK_{3,3}$$ subgraph.
I used a hint from Diestel's bo... | {} |
# What exactly is superconductivity?
Does superconductivity mean that the coulomb force or some magnetic force has gone up? I guess that it applies only to wires which get less resistance due to cooling... Is this wrong?
Also, Are there different kinds of superconductive states?
Is there a kind of superconductivity o... | {} |
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# Forum: Regression Analysis
Linear regression, linear models, nonlinear regression
1. ### Can we really(theoretically) generalize fixed regressor ... | {} |
1. Title Description
For 1 + 2 +... + n, it is required that keywords such as multiplication and division, for, while, if, else, switch, case and conditional judgment statements (A?B:C) cannot be used.
Example 1:
Input: n = 3
Output: 6
Example 2:
Input: n = 9
Output: 45
Restrictions:
1 <= n <= 10000
2. Method 1... | {} |
# LaTeX not working when I try to submit a solution
I was trying to submit a solution to the question 'A simple flying maneuver', when I ran into some problems with LaTeX. Also, on clicking the preview button, nothing happens. How do I submit the solution, then?
5 years, 2 months ago
MarkdownAppears as
*italics* or ... | {} |
Immersed Lagrangian Floer cohomology via pearly trajectories
Garrett Alston, Erkao Bao
Research output: Contribution to journalArticlepeer-review
Abstract
We define Lagrangian Floer cohomology over Z2-coefficients by counting pearly trajectories for graded, exact Lagrangian immersions that satisfy a certain positiv... | {} |
TFG|已知物体空间位置估计
TensorFlow又出了一个好玩的开源库：Graphics，主要解决从渲染器最终渲染结果逆推出各Mesh的Transform和Rotation。本文为官方提供的入门项目Object pose estimation的阅读笔记，代码均摘自源文件中。
Object pose alignment
• 机器学习：使用一个简单的神经网络进行深度学习。
• 数学优化
1.深度学习方法
定义模型
• 拆分输出项：将(,7)拆分为(,4)(,3)
• 用预测值对3D模型形变
• 用正确值还原对3D模型的形变
• 求出所有顶点偏移距离的平方（二阶范数）和
• 返回单个batch的error平均值
2. Ma... | {} |
## Prealgebra (7th Edition)
$-\frac{2}{9}$
When $x=-\frac{1}{3}$, y=$\frac{2}{5}$,and $z=\frac{5}{6}$ $x^{2}-yz$ $=(-\frac{1}{3})^{2}-(\frac{2}{5}\times\frac{5}{6})$ $=[(-\frac{1}{3})\times(-\frac{1}{3})]-(\frac{1}{1}\times\frac{1}{3})$ $=(\frac{1}{3}\times\frac{1}{3})-\frac{1}{3}$ $=\frac{1}{9}-\frac{1}{3}$ $=\frac{1... | {} |
# How can I tell if a relay coil is rated for 240VAC
I want to monitor a 240VAC line from an Raspberry Pi, my thought was to hook the 240VAC line to an appropriate relay then just sample the contacts from the Pi.
I have a relay which I think would work but I don't know how to be sure the coil is rated for 240VAC. It'... | {} |
# Aerodynamic Optimization
## Introduction
We will now demonstrate how to optimize the aerodynamic shape of a wing. We will be combining aspects of all of the following sections: Analysis with ADflow, pyOptSparse, and Geometric Parametrization. Again reference a high level explanation of how these fit together - ae... | {} |
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