arxiv_id stringlengths 0 16 | text stringlengths 10 1.65M |
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# User:Prime.mover/Constructs
## Useful Links to pages that use the Transclusion Extension
... and some proof structures
## Useful constructs
Useful constructs for anyone to cut and paste:
{{TableauLine
| n =
| pool =
| f =
| rlnk =
| rtxt =
| dep =
| c =
}}
{{EndSequence}}
No further terms of this seq... | |
COSAM » Events » 2015 » April » Applied Mathematics Seminar
Applied Mathematics Seminar Time: Apr 03, 2015 (02:00 PM) Location: Parker Hall 328 Details: Speaker: Prof. Dmitry Glotov Title: On an inverse coefficient problem with application in geology Abstract: The distribution of radiogenic $^{40}$Ar formed from d... | |
Colloquium
3:00 p.m., Friday (November 19, 2004)
Math Annex 1100
## Michael Ward UBC
### Eigenvalue Optimization, Spikes, and the Neumann Green's Function
An optimization problem for the fundamental eigenvalue of the Laplacian in a planar simply-connected domain that contains N small identically-shaped holes, each... | |
# Matching any certain selection of inputs [closed]
I have the following RegEx which matches any of a selection of inputs (see the list below).
While it works fine, I'm wondering if there is a better way of writing it, as it looks a little dirty. I've been using various RegEx builders but couldn't come up with a shor... | |
# Calculus - #6
posted by Samantha
If the following function is continuous, then what is the value of b?
g(f)={2t^2+2t-24 if f≠3
{b if f=3
0
3
7
14
None of these
If the following function is continuous, then what is the value of a?
h(f)={2t+b if f<0
{2cos(f)-3 if 0≤f≤(pi/2)
{asin(f)+5b if f>(pi/2)
0
1
2
4
## Simi... | |
# Prove that g(0)=0?
1. Aug 9, 2013
### Stevela
1. The problem statement, all variables and given/known data
Hello,
Suppose that f and g are differentiable functions satisfying
$\displaystyle \int_{0}^{f(x)} (fg)(t) \, \mathrm{d}t=g(f(x))$
Prove that g(0)=0
now if f(x)=0 in some point then it's straigh forward that ... | |
Partial Hasse invariants, partial degrees, and the canonical subgroup.(English)Zbl 1446.11105
Summary: If the Hasse invariant of a $$p$$-divisible group is small enough, then one can construct a canonical subgroup inside its $$p$$-torsion. We prove that, assuming the existence of a subgroup of adequate height in the $... | |
# Find all Polynomials P(x) with real coefficients
Find all Polynomials P(x) with real coefficients so that $2P(2x) = P(3x) + P(x)$. I tried to substitute first degree, second and third, bit couldn't get an equality. Thank you for your responses!
• can yo find the constant term? – Jorge Fernández Hidalgo Jan 6 '17 at... | |
Skip to main content
# On the formation of trapped surfaces
## Author(s): Klainerman, Sergiu; Rodnianski, Igor
To refer to this page use: http://arks.princeton.edu/ark:/88435/pr1dw81
Abstract: In a recent important breakthrough D. Christodoulou has solved a long standing problem of General Relativity of evolutionar... | |
In fact, given any orthonormal basis, is a continuous function. Learn to compute the orthogonal complement of a subspace. Online calculator to perform matrix operations on one or two matrices, including addition, subtraction, multiplication, and taking the power, determinant, inverse, or transpose of a matrix. 3. Visma... | |
# Trick to fix broken polygon geometries in QGIS 3.X
Fellow researchers and open-source GIS enthusiasts,
Welcome to my blog!
I’d like to start with a disclaimer – I may be a researcher of this very area but that doesn’t mean everything I do or write here will work for you, in your own desktop configurations and pack... | |
How to insert a background image in a beamer frame?
Apologies in advance if my question is very basic. I am still learning my beamer skills, so please bear with me.
I want to insert a background image in a beamer frame and use this "frame" as a beamer frame. I want to insert different background images on different f... | |
# This Video Of Scientists Splitting An Electron Will Shock You
by Jorge Cham.
Ok, this is where things get weird. If quantum computers, femtometer motions or laser alligators weren’t enough, let’s throw in fractionalized electrons, topological surfaces and strings that go to the end of time.
To be honest, the idea ... | |
## A structure theorem for sets of lengths.(English)Zbl 0926.11082
If $$R$$ is a ring of integers in an algebraic number field, which is not half-factorial, then the set of lengths of factorization of any non-zero element has a rather regular structure and a similar result holds also in more general domains as well as... | |
# Still Stuck on Binomial series
Use binomial series to approximate sqrt (35) with an accuracy of 10^(-7)
(35) = sqrt(35*36/36) = 6*sqrt(35/36)
Formula: (1+x)^n where x=(-1/36) and n=(1/2):
6*sqrt(35/36) = 6[(1 + (- 1/36))^(1/2)] =
The coefficients of the binomial series are:
'1/2 choose 0' is 1.
'1/2 choose 1' is ... | |
# 20.15: Obesity and Bias
Skills to Develop
• Bias Against Associates of the Obese
### Research conducted by
Mikki Hebl and Laura Mannix
Emily Zitek
### Overview
Obesity is a major stigma in our society. People who are obese face a great deal of prejudice and discrimination. For example, Roehling (1999) showed t... | |
# nLab Burnside ring
Contents
### Context
#### Representation theory
representation theory
geometric representation theory
# Contents
## Idea
The Burnside ring $A(G)$ of a finite group $G$ is the analogue of the representation ring in the category of finite sets, as opposed to the category of finite dimensional... | |
## Trigonometry (11th Edition) Clone
For $y = (x+2)^2 - 1,$ when $x=−2, y=-1$ The curve passes through $(−2,-1)$ Since the graph of $y=(x+2)^2-1$ is the same as the graph of $y=x^2$ but at a horizontal translation of 2 units to the left and a vertical translation of 1 unit down, graph "I" is the correct sketching. | |
# Tips for code-golfing in C#
What general tips do you have for golfing in C#? I'm looking for ideas that can be applied to code golf problems in general that are at least somewhat specific to C# (e.g. "remove comments" is not an answer). Please post one tip per answer.
-- borrowed from marcog's idea ;)
• BEST TIP =... | |
# Draw a square around a point.
I have a point on the graph at position X,Y , and I have to draw a square around that point of side X m. I have described my problem in the image.
I have taken an example square of 3 m. The diagonal of this square is 4.24 m(approx). I need to find the coordinates of the sides of the sq... | |
Boundary of a chain, Stokes' theorem.
Tags:
1. Jan 17, 2015
Kim.S.H
Hi, I'm studying multivariable analysis using Spivak's book "calculus on manifolds"
When I see this book, one strange problem arouse.
Thank you for seeing this.
Here is the problem.
c0 , c1 : [0,1] → ℝ2 - {0}
c : [0,1]2 → ℝ2 - {0}
given by
c0(s) = ... | |
SAROptimisationGoal
A SAR optimisation goal.
Example
app = cf.GetApplication()
project = app:NewProject()
-- Create a SAR optimisation goal with focus on a request with label "SARRequest"
properties = cf.SAROptimisationGoal.GetDefaultProperties()
properties.FocusSourceLabel = "SARRequest"
properties.GoalOperator =... | |
### 15.4.3.2 Lie algebra of the system distribution
Now suppose that a set , , of vector fields is given as a driftless control-affine system, as in (15.53). Its associated distribution is interpreted as a vector space with coefficients in , and the Lie bracket operation was given by (15.81). It can be verified that t... | |
# Redshifting help?
1. Sep 3, 2009
### Evolver
Okay, I understand the principle of redshifting, but I feel I am missing an element to it's comprehension because as is it doesn't make complete sense to me.
I understand the Doppler effect of sound waves, as in a train passing by; the waves in front are of a higher fr... | |
0
What is 17 20 th's in simplest form?
Wiki User
2017-04-18 00:12:45
Since the numerator of the fraction is prime, and not a factor of the denominator, the proper fraction 17/20 is already expressed in its simplest form.
Wiki User
2011-11-17 10:08:52
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3.72
33... | |
@ tNCjO`FA NCjObV`FA@ @\`FA OA`FA p\RfXN e[u fUCi[YƋ @ @
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@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @@@ Ri5-Si02 @ @@@ Case for iPhone5 @ @@@ iPhone5pP[X @ @@@ \ 3,800(ŕ) @ @ @@@@@ JAN@ 4939958 301746@iBKj @ @@@@@ ގ@{́FVRn @ @@@@@@@@@ ubNEO[EzCgEbhECG[ @ @
@ @ @
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@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @@@... | |
niyaznigmatul's blog
By niyaznigmatul, 2 years ago, translation, ,
Editorial
Hello!
Codeforces Round #467 (Div. 1) and Codeforces Round #467 (Div. 2) will take place on February, 25 at 14:35 UTC. Most of the problems are Innopolis Open Olympiad in Informatics problemset. We ask olympiad participants not to take par... | |
# Frontiers of Earth Science
ISSN 2095-0195 (Print)
ISSN 2095-0209 (Online)
CN 11-5982/P
Postal Subscription Code 80-963
Formerly Known as Frontiers of Earth Science in China
2018 Impact Factor: 1.205
#### , Volume 13 Issue 2 dateToAbbreviationMonthYear('2019-06-15 00:00:00.0','CurrentIssueDate');
RESEARCH ARTICLE
... | |
# Limits of a simple damped system
Definition: Let $F_n(s) = \frac{1}{s^{n+1}(1+s)^n}$ be the Laplace transform of $f_n(t)$.
Required Result: To show $\lim_{n\rightarrow\infty}f_n(n+n/e) < o(n)$.
Ideas: Let $G_n(s)=\frac{1}{s^{n+1}}$. Using standard Laplace transform properties:
1. $g_n(t)= \frac{t^{n}}{n!}$. Using... | |
# Documentation
Lean.SubExpr
A position of a subexpression in an expression.
See docstring of SubExpr for more detail.
Equations
Equations
The coordinate 3 = maxChildren - 1 is reserved to denote the type of the expression.
Equations
Equations
The Pos representing the root subexpression.
Equations
Equations
Th... | |
Computer Science
Material in Unit 6 is optional. You are not expected to know this for a test and there are no labs or projects using this material.
# Using pandas to plot climate change data
This guide shows how to use pandas to plot climate change data. If you are new to pandas, see introduction to pandas.
This g... | |
268 views
The questions are based on the following information.
What is the simple annual rate of increase in the number of Agricultural loans from $1970$ to $1983$?
1. $132$%
2. $81$%
3. $75$%
4. $1056$%
1
508 views
2
431 views | |
# Sum Of Roots
Level pending
[A Problem From London University]
Find the sum of the fifth powers of the roots of the equation
× | |
# American Institute of Mathematical Sciences
February 2016, 10(1): 1-25. doi: 10.3934/ipi.2016.10.1
## On the choice of the Tikhonov regularization parameter and the discretization level: A discrepancy-based strategy
1 Computational Science Center, University of Vienna, Oskar Morgenstern-Platz 1, 1090 Vienna, Aus... | |
# what is a clear liquid that attacks cellular respiration
I'm doing a biology assignment and need to find out a clear liquid that attacks cellular respiration. It needs to be toxic and either absorbed through the skin or inhaled.
• I'd try asking this on Biology.SE, not here. And nevertheless, you should give candid... | |
# Trend Base Analysis & Divergence
Education
ASX:FWD FLEETWOOD LIMITED
109 views
Today, I show this example for you to understand why bullish divergence is important for an entry order.
FWD .AX is selected because VectorVest indicator RT crossover occurred on 4 May which is the same day that Stochastic (8,3,3) cros... | |
# Why are powers of coprime ideals are coprime? [duplicate]
Possible Duplicate:
Comaximal ideals in a commutative ring
On this webpage http://www.imsc.res.in/~kapil/geometry/caag/finite.html it's a stated fact that if $I$ and $J$ are coprime ideals of a ring $A$, then $I^k$ and $J^\ell$ are also coprime for any integ... | |
## dark plasma physics
According to plasma metaphysics, a significant proportion of dark matter is in the form of a plasma of super (high energy) particles. … aa/article/view/4550, Eugene Oks. Research in Astronomy and Astrophysics. Nobody knows exactly what dark matter is. In 2020, in a paper published in Research in... | |
# What name would you give a compound consisting of two bromine atoms and one calcium atom?
I would call $C a B {r}_{2}$ $\text{calcium bromide}$.
$\text{Calcium bromide}$ is formally an ionic compound that is composed of $C {a}^{2 +}$ and $2 \times B {r}^{-}$ ions. | |
# Chord Socket¶
This is an extension of the MeshSocket which syncronizes a common dict. It works by providing some extra handlers to store data. This exposes the entire dict API.
Note
This is a fairly inefficient architecture for read intensive applications. For large databases which are infrequently changed, this i... | |
# What's one thing you like about Socratic?
Apr 5, 2017
(I'm going to answer my own question:)
#### Explanation:
One thing I really love about Socratic is that it reminds me somewhat of the Avengers (from Marvel Studios). Everyone is answering a question and doing their part and at the end, it ends up helping a lot... | |
# Transformations of conics?
• May 15th 2011, 08:55 PM
homeylova223
Transformations of conics?
Write an equation of the translated or rotated graph in general form.
y=3x^2-2x+5 T(2,-3)
I know the graph is a parabola. But I am not sure where I would "plug in" h and k into this equation. To get the translated equation... | |
# Method of Undetermined Coefficients help
1. Jul 21, 2011
Ok, please view the attached image for the Question, and for the given solution.
I need some help understanding the solution.
I can get the Complimentary equation with no problems, I understand how to do that.
However, some questions
1) Why do we first ig... | |
Write 35 percent as a fraction in the lowest term
35% expressed as a fraction is 35/100
To put it in lowest terms you need to find the largest common factor of 35 and 100
The only factors of 35 are 1, 35, 5 and 7
The highest factor of 35 that will divide evenly into 100 is 5
35/5
100/5
= 7/20
.
To solve this, we sim... | |
# Debian on Android and my quest for a full-fledged terminal Python IDE¶
So when I recently discovered that my Asus Transformer Prime has Python on it, but that it only has version 2.6.2 and is missing some needed libraries, I could tell that setting up a sweet Python programming environment was going to be possible, ... | |
# 62 Non-right Triangles: Law of Sines
### Learning Objectives
In this section, you will:
• Use the Law of Sines to solve oblique triangles.
• Find the area of an oblique triangle using the sine function.
• Solve applied problems using the Law of Sines.
Suppose two radar stations located 20 miles apart each detect ... | |
# Figure 4
\textit{} Number of standard deviations $n_{\sigma}$ of the modeled correlation function for a given set of scattering parameters (effective range $d_0$and scattering length $f_0$)with respect to the data, together with various model calculations~ and measurements~. The gray shaded area corresponds to the ... | |
# Derriving time-dilation formula for velocity
I took a stab at deriving the time dilation formula for velocity. This is entirely my own approach though I suspect it is nothing new/special in terms of how it is derived. Just wanted to have some fun and see if i could figure it out for myself. So I knew it was all base... | |
# Method used by FindFit
Using FindFit, Mathematica selects an optimal algorithm when Automatic is selected. I'd like to know the name of the method applied to the FindFit computation. Is there any option to explain that?
-
I don't think you can hijack FindFit[] to say exactly what method it uses. However, the docs s... | |
grit - GBA Raster Image Transmogrifier
Grit and its GUI version Wingrit are my image converters for the GBA (and NDS I guess). They can do most of the simple things like reading an image (pretty much any type of bitmap thanks to FreeImage) and converting it to binary data of various bitdepths which can be directly put... | |
R igraph manual pages
Use this if you are using igraph from R
Description
Classify dyads in a directed graphs. The relationship between each pair of vertices is measured. It can be in three states: mutual, asymmetric or non-existent.
Usage
dyad_census(graph)
Arguments
graph The input graph. A warning is given ... | |
# Math Help - Fibers
1. ## Fibers
7. $f: A \rightarrow B$ is a surjective map of sets. We want to prove that $a \sim b$ if and only if $f(a) = f(b)$ is an equivalence relation whose equivalence classes are fibers of $f$.
2. Here it is: $
\begin{array}{l}
\left( {\forall x \in A} \right)\left[ {f(x) = f(x)} \right] \... | |
New Titles | FAQ | Keep Informed | Review Cart | Contact Us Quick Search (Advanced Search ) Browse by Subject General Interest Logic & Foundations Number Theory Algebra & Algebraic Geometry Discrete Math & Combinatorics Analysis Differential Equations Geometry & Topology Probability & Statistics Applications Ma... | |
### Recent Submissions
• #### Aplicações singulares via grupos de reflexões
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Matemática - PPGM, Câmpus São Carlos, 24/04/2020)
Our objective with this essay is to describe a way to build germs of applications A-finite f:(\C^{n},0) \rightarrow ... | |
# End vertex
In graph theory , a vertex with degree $1$ is called an end vertex (plural end vertices ). In the figure below, vertices $b,c,d,e$ and $f$ are end vertices. | |
# [Fontinst] glyph name aliasing
Alexej Kryukov akrioukov at newmail.ru
Tue May 3 20:00:04 CEST 2005
Dear Lars,
aliasing, and only now found it in the mailing list archive.
> what will happen when some virtual font calls upon the glyph in
> slot 17 (which fontinst was told by fasr8r.mtx is dotlessi)? The
> PS inter... | |
# Density operator
1. Sep 21, 2007
### PhysiSmo
We are given that 2 systems can only be found in the states $$|00\rangle, |01\rangle, |10\rangle, |11\rangle$$. We are also given that the density operator is
$$\rho=\frac{1}{2}\left(|00\rangle \langle 00|+|11\rangle \langle 00|+|00\rangle \langle 11|+|11\rangle \lang... | |
## Abstract
We consider the abelian group $PT$ generated by quasi-equivalence classes of pretriangulated DG categories with relations coming from semiorthogonal decompositions of corresponding triangulated categories. We introduce an operation of “multiplication” • on the collection of DG categories, which makes this ... | |
# Massless integrals in dim-reg
Consider the massless divergent integral $$\int dk^4 \frac{1}{k^2},$$ which occurs in QFT. We can't regularize this integral with dim-reg; the continuation from the massive to the massless case is ill-defined. It can be shown, however, that no "inconsistencies" occur if $$\int dk^4 \fra... | |
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# [REL][BETA 2]GTASA SaveGame ENEX Updater 0.1 beta2
## Recommended Posts
Guys I released the latest version of G^seu. It got fixed most of the bugs contained in the beta1. Also it is powered with some new features like. Editing existing ENE... | |
## Section8.1Graphical and Numerical Solutions to Differential Equations
In Section 5.1, we were introduced to the idea of a differential equation. Given a function $$y = f(x)\text{,}$$ we defined a differential equation as an equation involving $$y, x\text{,}$$ and derivatives of $$y\text{.}$$ We explored the simple ... | |
Many conferences and journal, at least in my field, impose a restriction on the number of pages of the manuscript. I personally don’t agree with the current practice of limiting the page number of manuscript. Although this is somehow understandable for printed journals, this is a totally unnecessary restriction for pap... | |
Friday, January 9, 2015
Convert Runtime Database to File Geodatabase
New at 10.3, you can convert a runtime database to a file geodatabase. The tool copies the contents of a runtime geodatabase into a new file geodatabase including the table names, etc... It's very simple to use:
import arcpy
arcpy.CopyRuntimeGdb... | |
# Find the kth prime and all the primes below it
It works by finding 2n+1 with n from 1 to k, but not where 2n+1 would be divisible by one of the already known primes. I'd like to know if the program can find every prime, and if so, how it compares to the efficiency of other algorithms.
n=1
k=input()
primes=[2]
def f... | |
# find a basis for U span?
Find a basis for $U= span\{(1,3,2) ,(2,4 ,5) , (5,11,12) , (1,1,3)\}$?
i was trying this question many times, but i could not able to solve this question , i have no any idea or hint to solve this question. I know that all these vector are linearly independent, but i know that all linear in... | |
## 187 – Selected solutions to problems from Chapter 1
September 19, 2011
Professor Warren Esty, one of the authors of our main textbook, has made available a list of solutions to some of the problems from Chapter 1. They are most of the odd numbered problems. Please let him (or me) know if you find errors or typos, ... | |
# Generating Reflectance Curves from sRGB Triplets (Page 2)
#### sRGB Triplet from a Reflectance Curve
The reverse process of computing an sRGB triplet from a reflectance curve is straightforward. It requires two main components: (1) a mathematical model of the “standard observer,” which is an empirical mathematical ... | |
# Wavelengths of the visible spectrum
Why is data about wavelengths of different colors and the visible spectrum in general so different in different sources? On Wikipedia, the numbers differ by up to $\pm\mathrm{30~nm}$.
• It may all be because there's no distinguishable "line" between for example blue and violet. I... | |
# 400V digital potentiometer
Status
Not open for further replies.
#### lordsandman
##### Newbie level 3
hi everyone,
i want to design a digital power supply with 400V, max 2mA output and 0.1V resolution(12-bit). i know its hard to control 400V with MCU but output current so tiny. is it possible to divide 400V by dig... | |
How do you find the derivative of (2e^(3x) + 2e^(-2x))^4?
Aug 14, 2017
$4 {\left(2 {e}^{3 x} + 2 {e}^{- 2 x}\right)}^{3} \left(6 {e}^{3 x} - 4 {e}^{- 2 x}\right)$
Explanation:
$\text{differentiate using the "color(blue)"chain rule}$
$\text{given "y=f(g(x))" then}$
$\frac{\mathrm{dy}}{\mathrm{dx}} = f ' \left(g \l... | |
Hide
# Problem ILinear Recurrences
## Input
The first line of input contains an integer $1 \le N \le 40$, the degree of the recurrence. The next line of input contains $N+1$ integers $a_0, a_1, \ldots , a_ N$ indicating that the linear recurrence is $x_{t} = a_0 + \sum _{i=1}^ N a_ i x_{t-i}$. The next line contains... | |
# Determine if the following change is an oxidation, a reduction, or neither
The following reaction is not a complete reaction. Determine if the change is an oxidation, a reduction, or neither: $$\ce{CrO4^{-2} -> Cr2O7^{-2}}$$
I know that the answer to this problem is neither, but I don't have any idea as to how that... | |
# 21.3 Radioactive decay (Page 5/21)
Page 5 / 21
Because each nuclide has a specific number of nucleons, a particular balance of repulsion and attraction, and its own degree of stability, the half-lives of radioactive nuclides vary widely. For example: the half-life of ${}_{\phantom{\rule{0.5em}{0ex}}83}^{209}\text... | |
#jsDisabledContent { display:none; } My Account | Register | Help
# Linear system
Article Id: WHEBN0000722503
Reproduction Date:
Title: Linear system Author: World Heritage Encyclopedia Language: English Subject: Collection: Systems Theory Publisher: World Heritage Encyclopedia Publication Date:
### Linear syste... | |
# triangle help
• Jun 5th 2012, 12:52 AM
Domicro
triangle help
Hi. I've just got 20 math tasks that I need to solve until saturday. I don't know how to solve 4. Pls help. P. S. My english is not very good, sorry about that..
1. Man and woman are standing on the street. A man is tall 188 cm and his shadow is tall 1 m (... | |
#### MAT-06.EE.02.c
6th Grade MAT Targeted StandardsDomain (EE) Expressions and EquationsCluster: Apply and extend previous understandings of arithmetic to algebraic expressions Write, read, and evaluate expressions in which letters stand for numbers. MAT-06.EE.02.c Evaluate expressions at specific values of their va... | |
/ deeplearning.ai深度学习笔记整理
# deeplearning.ai深度学习笔记（Course2 Week1）：Practical aspects of deep learning
1. 训练集、开发集、测试集的概念
2. Bias/Variance问题
3. 如何通过泛化（regularization）算法，解决High variance问题，以及常用的集中regularization算法。
4. 最小化J中的一些加快手段
• 标准化输入（Normalizing ）
• 验证梯度计算是否正确。
# 1- Setting up your Machine Learning Application
## 1.1... | |
# 7.1 Electric potential energy (Page 4/5)
Page 4 / 5
${W}_{2}=k\frac{{q}_{1}{q}_{2}}{{r}_{12}}=\left(9.0\phantom{\rule{0.2em}{0ex}}×\phantom{\rule{0.2em}{0ex}}{10}^{9}\frac{\text{N}·{\text{m}}^{2}}{{\text{C}}^{2}}\right)\frac{\left(2.0\phantom{\rule{0.2em}{0ex}}×\phantom{\rule{0.2em}{0ex}}{10}^{-6}\phantom{\rule{0.... | |
# Fractions and roots
I have this problem:
$$\frac{\sqrt{18}+\sqrt{98}+\sqrt{50}+4}{2\sqrt{2}}$$
I'm able to get to this part by myself:
$$\frac{15\sqrt{2}+2}{2\sqrt{2}}$$
But that's when I get stuck. The book says that the next step is:
$$\frac{15\sqrt{2}}{2\sqrt{2}}+ \frac{2}{2\sqrt{2}}$$
But I don't understan... | |
# Ross Rheingans-Yoo
197Joined Dec 2020
# Posts 2
Sorted by New
I'd argue that you need to use a point estimate to decide what bets to make, and that you should make that point estimate by (1) geomean-pooling raw estimates of parameters, (2) reasoning over distributions of all parameters, then (3) taking arithmean ... | |
# Software to Find Kernels/Co-Kernels of Boolean Expressions
Is there any (free) software available that calculates all the possible kernel/co-kernel pairs of a boolean expression?
-
A free tool is misII - Multiple-level Combinational Logic Optimization Program. It is contained in the Windows freeware package Logic ... | |
# Did I properly implement double integral equation in dblquad Python? Helicoidal Surface Theory [closed]
I show the equations (simplified Helicoidal Surface Theory for implementation purposes) that I want to calculate numerically using Python.
and the code:
from scipy.integrate import quad
import numpy as np
from s... | |
# Keep Image Size the same even after zooming in and out
I have a mat-sidenav component filled with mat-card components. Outside the sidenav, I have the rest of my page. What I would like is for my sidenav card components to keep the exact same size as someone is zooming in and out the page. I have illustrated what I ... | |
## Shell Canada Outlines Further Oil Sands Expansion
##### 25 January 2007
Overview of oil sands production (mining) process. Click to enlarge. Source: Shell Canada.
Shell Canada is planning to expand its minable oil sands production to approximately 770,000 barrels a day—more than four times the current output—and ... | |
## Accardi complementarity for -1/2 < mu < 0 and related results
##### Authors
Cepeda, Lenin A. Echavarria
Ruiz, Claudio Pita
Sontz, Stephen B.
##### Description
We show (an earlier conjecture of the last two authors) that the momentum and position operators of mu-deformed quantum mechanics for -1/2 < mu < 0 are not A... | |
• # question_answer If $S=\sum\limits_{n=0}^{\infty }{\frac{{{(\log x)}^{2n}}}{(2n)\,!},}$ then $S$ = A) $x+{{x}^{-1}}$ B) $x-{{x}^{-1}}$ C) $\frac{1}{2}(x+{{x}^{-1}})$ D) None of these
Solution :
We have $S=\sum\limits_{n=0}^{\infty }{\frac{{{(\log x)}^{2n}}}{(2n)!}=\left( \frac{{{e}^{\log x}}+{{e}^{-\log x}}}{2} \... | |
MathSciNet bibliographic data MR1317645 58F05 (58F25) Ginzburg, Viktor L. An embedding $S^{2n-1}\to {\bf R}^{2n}$$S^{2n-1}\to {\bf R}^{2n}$, $2n-1\geq 7$$2n-1\geq 7$, whose Hamiltonian flow has no periodic trajectories. Internat. Math. Res. Notices 1995, no. 2, 83–97. Article
For users without a MathSciNet license , R... | |
# Tag Archives: collatz
## Some Pictures of the 3n+1 Problem
The 3n+1 conjecture (a.k.a. the Collatz conjecture) is easy to state, unsolved, probably difficult to prove if true, and can provide us with some pretty pictures. I'm only going to state it and show some pretty pictures. First, what's this conjecture? It's ... | |
Lemma 42.63.2. Let $(S, \delta )$ be as above. Let $X$ be a scheme locally of finite type over $S$. Then we have a canonical identification
$A^ p(X \to S) = \mathop{\mathrm{CH}}\nolimits _{1 - p}(X)$
for all $p \in \mathbf{Z}$.
Proof. Consider the element $[S]_1 \in \mathop{\mathrm{CH}}\nolimits _1(S)$. We get a map... | |
# Laplace and Poisson's equation.
1. Dec 10, 2013
### yungman
1. The problem statement, all variables and given/known data
I want to verify for $v=\ln( r)$, that
a)$\nabla^2 v=0$ for $v$ on a disk center at $(x_0,y_0)$. Therefore $v$ is Harmonic.
b)$\nabla^2 v=\frac{1}{r^2}$ for $v$ on a sphere center at $(x_0,y_... | |
# Free Alabama CDL General Knowledge Practice Test 2023
You are looking for actual practice for your coming CDL test? So you have come to the right place. Our AL General Knowledge Practice Test has the same questions as the real exam which is based on the Alabama CDL manual. Our CDL practice test pack covers most of t... | |
Technical Article
# Turn Your PWM into a DAC
April 06, 2016 by Robert Keim
## If your microcontroller doesn’t have a digital-to-analog converter, you can make a passable replacement with nothing more than a pulse-width-modulated signal and a low-pass filter.
If your microcontroller doesn’t have a digital-to-analog ... | |
### Continuity and Differentiability
goals
Rewrite the following equations in the logarithm from :
$5^0 \, = \, 1$
If $\log^2 \left(\dfrac{a}{b}\right) + \log^2 \left(\dfrac{b}{c}\right) + \log^2 \left(\dfrac{c}{a}\right) + \log^2 a + log^2 b + \log^2 c - log \, abc + k \ge 0$ where a, b, c, k are real position number... | |
# ComePLAY Titanium Handlebars vs Aluminium vs 500T Press
## Introduction
A viewer of the Hambini Youtube channel was on the lookout for some new titanium handlebars for his bicycle and found a Chinese company called Comeplay which specializes in titanium production. The handlebars retail at 180 and are available in ... | |
# Evaluation of a hypergeometric function
I am working with functions like
f[z_] = Hypergeometric2F1[4, 4, 8, z]
Here is a plot of this function over the interval $$z \in [0,1]$$:
Plot[f[z], {z, 0, 1}]
As you can see, Mathematica has difficulties evaluating it in the region $$z \approx 0$$. This is surprising, b... | |
# Estate
Semicircle estate must be fence. The straight section has 26 meters long fence. How many meters of fence should buy?
Result
x = 40.8 m
#### Solution:
$x = \pi r = \pi \dfrac{ 26}{2} = 40.8 \ \text{m}$
Our examples were largely sent or created by pupils and students themselves. Therefore, we would be ple... | |
# Ecosystem#
Fugue can be used in conjuction with a lot of other Python libraries. Some of these integrations are native where Fugue can be used as a backend. For the others, there is no native integration but they can be used together with minimal lines of code, normally through the transform() function.
Have questi... | |
# Chapter 11 - Section 11.3 - Series - Exercise Set: 5
$20$
#### Work Step by Step
We sum from i = low bound to i = high bound. $(2^2-3) + (3^2-3) + (4^2-3) = (4-3) + (9-3) + (16-3) = 1 + 6 + 13 = 20$
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either ... | |
# All Questions
10 views
### a question on sum of Gaussian binomial coefficients
I was trying to calculate something and at some point I get the following sum: \sum_{t=0}^{s}{s+3n \brack s-t}\sum_{i = 0}^{t/2}q^{2i^2}{t/2+2n-i \brack t/2-i}{n \brack 2i}x^t ...
34 views
### $K$-homology of $BG$
Let $G$ be a finite ... | |
# Group Theory
1. Mar 3, 2005
### PhysKid24
Hi. Can anyone help me figure out how to find the conjugacy classes for a certain group and the elements in each class. I'm looking at the dihedral group of degree 5 (D5). I found the 10 elements in the group, but I dont know how to get the conjugacy classes and the elemen... |
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