content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Weights on Von Neuman factors
up vote 0 down vote favorite
Let A be a type $I$ factor on a Hilbert space H. Let $\varphi$ be a semi-finite normal weight on $A^{+}$ is it possible to say that then there exist Hilbert spaces $H_2 \subset H_1$ and an
isomorphism of $H$ onto $H_2\otimes H_1$ such that A is isomorphic to $... | 4 | [
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0.05908203125,
0.01104736328125,
0.0417... | 45,200 | 45200 | |
Linearly independent vector fields
up vote 6 down vote favorite
2
Let $X_1,\dots,X_n$ be complete vector fields on $\mathbb R^n$ and suppose that $(X_1(p),\dots,X_n(p))$ is a basis for all $p \in \mathbb R^n$.
Question: Is it possible to choose a cube $C$ around the origin of $\mathbb R^n$ such that there is for ever... | 5 | [
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0.02978515625,
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0.05590... | 45,201 | 45201 | |
The Three Canteens
Date: 09/18/97 at 10:40:26
From: Joe
Subject: The Three Canteens
Two men wandering in the desert come upon a trail. In hopes of finding
help sooner, they decide to split up, each taking half their remaining
water, and set off in opposite directions along the trail.
They have only one 14-cup cante... | 5 | [
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Bristol Dyno - What is a dynamometer - How does the Dynojet chassis dyno
work
HOME PHOTOS VIDEOS CONTACTS DIRECTIONS DYNO 101 TUNING TIPS DYNOGIRL
DYNO SPECS PRICING PROCEDURE DATABASE PART... | 4 | [
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Small angle approximation for sinx
June 28th 2011, 05:53 PM #1
Junior Member
Joined
Feb 2011
Posts
72
Small angle approximation for sinx
Hi all.
I am working on a problem but I am stuck.
Prove that dcosx/dx = -sinx using Small angle approximation and the addition formula for sin(x)
My try:... | 4 | [
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identity proving with two terms in denominator
March 3rd 2013, 06:24 AM
ellicott
identity proving with two terms in denominator
I have a trig identity proving question:
(1 - sin(x))/(1 + sin(x)) = tan(x) + 1/cos(x)
by multiplying 1 - sin(x) on left side doesn't seems work.
Anyone can help. Thanks ... | 4 | [
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... | 45,205 | 45205 | |
p-values are (possibly biased) estimates of the probability that the null hypothesis is true
March 31, 2013
By Justin Esarey
Last week, I posted about statisticians’ constant battle against the belief that the p-value associated (for example) with a regression coefficient $\hat{\beta}$ is equal to the probability th... | 5 | [
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Z-Score to Percentile Formula?
September 27th 2012, 03:00 PM
JungleMath
Z-Score to Percentile Formula?
I am looking for a formula to convert a z-score into the percentile or confidence interval.
for example a z-score of 1 would give 68%, a z-score of 2 would give 95%
what is the formula/equation for th... | 5 | [
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Find the area of the region bounded between paraboa and line
December 1st 2009, 03:45 PM #1
Banned
Joined
Dec 2008
From
Mauritius
Posts
523
Find the area of the region bounded between paraboa and line
Question : Find the area between the parabola $y^2 = 4ax$ and the line $y = mx$
Solution :
... | 5 | [
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... | 45,208 | 45208 | |
Arc length using integrals
April 2nd 2009, 08:55 PM
bnay
Arc length using integrals
Ok, I've got this equation here,
y=ln((e^x+1)/(e^x-1)
and from this equation I need to find the arc length where p< x < q, p > 0.
I know the formula for the length is the integral from p to q of [1+(dy/dx)^2]^2dx, ... | 5 | [
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Sum of square free divisors of integer
March 23rd 2012, 05:30 AM #1
Member
Joined
Nov 2010
Posts
95
Sum of square free divisors of integer
Hi, is there any forumula to find the sum of square free (Square-free integer - Wikipedia, the free encyclopedia) divisors of an integer?
One way is to get the di... | 4 | [
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Bayesian Counterpart to Fisher Exact Test on Contingency Tables
I want to expand a bit on Andrew’s post, in which he outlines a simple Bayesian analysis of 2×2 contingency tables to replace Fisher’s exact test (or a chi-square test) for contingency tables.
Contingency Table
I’ll use the data in the example in the Wi... | 5 | [
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0.038085937... | 45,211 | 45211 | |
Diagnolize Matrix
January 10th 2007, 07:42 PM #1
Global Moderator
Joined
Nov 2005
From
New York City
Posts
10,616
Thanks
9
Diagnolize Matrix
I am preparing to take an exam on Linear Algebra.
I found this question on previous exams.
Here is what I think is needed to be done.
1)First f... | 5 | [
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Math word problems
December 8th 2009, 01:27 PM #1
Newbie
Joined
Dec 2009
Posts
7
Math word problems
Hi, new here. I got a question here that I do not understand how to do at all. It'd be nice if someone explained how to solve it.
It took a crew 80 minutes to row 3km upstream and back again. If the r... | 4 | [
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0.0... | 45,213 | 45213 | |
Math Forum Discussions
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Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.
Topic: Misner, Thorne and Wheeler, Exercise 8.5 (c)
Repli... | 5 | [
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-0.04321289... | 45,214 | 45214 | |
Generating function related to 2-residues of partitions
up vote 4 down vote favorite
Question
Express the following power series in two commuting variables $x,y$ as an infinite product, or a short sum of infinite products: $$ \frac{P(xy)^2}{(1-x)}\sum_{k=-\infty}^\infty(2k+1)x^{k^2}y^{k^2+k}.
$$ Here $P(x)=\prod_{i=1... | 4 | [
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-0.00634765625,
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fields and elements
March 17th 2010, 04:50 PM
twittytwitter
fields and elements
Let K be a finite field with k elements. Let K*={x1,x2,...,xk-1}, the non-zero elements of K.
Show that product (x belonging to K*) x=x1x2...xk-1=-1.
Hint: Try to arrange, in the product, the elements in pairs a,b with ab=1,... | 5 | [
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-0.042724... | 45,216 | 45216 | |
probability distribution for 6 fair coins
May 18th 2007, 05:01 PM
solace
probability distribution for 6 fair coins
In a certain experiment, 6 fair coins are flipped. Let the random variable x be the number of heads observed. Construct the probability distribution for the experiment.
The only way i can think... | 4 | [
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Question regarding divergence
up vote 4 down vote favorite
3
Let $E$ be a closed and convex set of distributions on a finite set $A$. Let $P',Q'\notin E$ and let $P^{\star},Q^{\star}$ be their respective estimates in $E$ with respect to the KL-divergence,
i.e., $D(P'\|P^{\star})=\min_{P\in E}D(P'\|P)$ and similarly fo... | 5 | [
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The Virtual Ground
by Adrian S. Nastase
Email Comment Print Subscribe
In my articles I talked about the op amp virtual ground and sometimes I wrote a brief explanation of this concept. In this article I will show you why an op amp input can be considered at a zero
potential, without being galvanically connected to ... | 4 | [
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0.05615234375,
0.03... | 45,219 | 45219 | |
ud
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Here's the question you clicked on:
dudeperuvian Group Title
help me find dy i... | 5 | [
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Projections onto $n$-codimensional subspaces of a Banach space: norms.
up vote 6 down vote favorite
Hello, I'd like some help to find an answer I've been looking for since this morning. Let $X$ be a Banach space and let $Y$ be an $n$-codimensional subspace of $X$. Let $P$ be a projection from $X$
onto $Y$. Which is th... | 5 | [
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... | 45,221 | 45221 | |
Posts about Hecke algebras on Annoying Precision
The double commutant theorem
Posted in Uncategorized, tagged adjoint functors, Hecke algebras, MaBloWriMo on November 11, 2012 | 3 Comments »
Let $A$ be an abelian group and $T = \{ T_i : A \to A \}$ be a collection of endomorphisms of $A$. The commutant $T'$ of $T$ is... | 4 | [
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... | 45,222 | 45222 | |
Help me understand generating functions?
September 16th 2010, 08:56 AM #1
Junior Member
Joined
Feb 2010
Posts
56
Help me understand generating functions?
I don't understand generating functions...can someone please shine some light on this topic?
I don't see how to get from one point to another....f... | 5 | [
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Polynomial Equation Solver
Introduction
Recently I came across a situation where I needed to solve a 4th degree polynomial equation in .NET, and to my surprise I couldn't find any code written in C# or VB .NET that contained either the
explicit algebraic formulas, or the numerical algorithm Jenkins-Traub. (hvowever I... | 4 | [
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Number of linear orders
up vote 10 down vote favorite
It is well known that for every infinite cardinal $\kappa$ the number of non-isomorphic total orders of cardinality $\kappa$ is $2^\kappa$. Who first proved this, and in what context? Was it proved
for $\kappa=\aleph_0$ first, and then for uncountable $\kappa$, or ... | 4 | [
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0... | 45,225 | 45225 | |
Proof of independence of random variables
September 17th 2009, 12:15 AM
noname
Proof of independence of random variables
Hi, i have a question
Two random variables X and Y are independent. How can i prove that X,Y+1 are independent?
Thanks
September 17th 2009, 11:00 AM
CaptainBlack
Quote:
... | 5 | [
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How to solve a quadratic equation in characteristic 2 ?
up vote 18 down vote favorite
5
What do I do if I have to solve the usual quadratic equation $X^2+bX+c=0$ where $b,c$ are in a field of characteristic 2? As pointed in the comments, it can be reduced to $X^2+X+c=0$ with $c\neq 0$.
Usual completion of square brea... | 5 | [
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0.08056640625,
-0.002044677734375,... | 45,227 | 45227 | |
Text_Template
13. Rotational and Vibrational Spectroscopy
After studying this lecture, you will be able to do the following:
Calculate the bond lengths of diatomics from the value of their rotational constant.
Outline the selection rules for rotational and vibrational spectra and rationalize the role of the molecula... | 5 | [
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0.05029296875,
0.048095703125,
0.01519775390625,
0.... | 45,228 | 45228 | |
random calculus questions
October 7th 2009, 06:51 PM #1
Junior Member
Joined
Mar 2009
Posts
32
random calculus questions
i worked it out by differentiating f(y) and then g(y) to get:
5Ay^-6 + Be^y
but that's not hte right answer. am i differentiating wrong?
Find the equations of the t... | 5 | [
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0.08935546875,
0.0022430419921875,
0.07666015625,
-0.110351... | 45,229 | 45229 | |
theory
You are currently browsing the category archive for the ‘math’ category.
A few weeks ago, the Proceedings of the National Academy of Science published an article on a study conducted by a group of Cornell researchers at Facebook. They picked about 600,000 users and then,
for a week, a subset of them saw fewer “... | 4 | [
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0.039794921875,... | 45,230 | 45230 | |
Banach spaces
February 23rd 2010, 12:33 AM
surjective
Banach spaces
Hello,
I have been trying to solve two questions concerning norm-defining and subspace. This I am trying to do with respect to Banach-spaces. Allow me to introduce the problem (it's a bit long so bear
with me):
I am considering a s... | 5 | [
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Using Maple to Study Some Differential Problems
Department of Management and Information, Nan Jeon University of Science and Technology, Tainan City, Taiwan
Abstract
This paper takes the mathematical software Maple as the auxiliary tool to study the differential problems of four types of functions. We can obtain the... | 5 | [
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How do you compute the primes of bad reduction?
up vote 6 down vote favorite
1
Suppose that I am given a subscheme $Y$ of $\mathbf{P}^n_{\mathbf{Z}}$, flat over $\operatorname{Spec}\mathbf{Z}$ and with smooth generic fiber $Y_{\mathbf{Q}}$, defined by the vanishing of some
homogeneous polynomials $$ F_1, \ldots, F_k \... | 4 | [
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... | 45,233 | 45233 | |
Quadratic Projectile Motion help?
March 18th 2013, 05:02 AM
ZzTop0503
Quadratic Projectile Motion help?
Okay so here is the original equation:
A rocket is launched into the air from the top of a building. It's height (in meters) is given by:
h(t)= -5tē + 30t + 100, where t = time in seconds.
When do... | 4 | [
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Lie algebra $\mathfrak{so}(9)$ as a subalgebra of $\mathfrak{f}_4$
MathOverflow is a question and answer site for professional mathematicians. It's 100% free, no registration required.
What are the explicit Lie algebra mono-morphisms from $\mathfrak{so}(9)$ into the exceptional Lie algebra $\ma... | 4 | [
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0.098144... | 45,235 | 45235 | |
Building Energy Transfers: Modes of Heat Transfer, Thermo-physical Properties of Materials, and Calculation of U-value
... | 5 | [
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Volume by Inch of a Cone-Shaped Tank
Associated Topics || Dr. Math Home || Search Dr. Math
Volume by Inch of a Cone-Shaped Tank
... | 4 | [
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quadratic problem - please get me started
July 16th 2009, 07:10 AM #1
Member
Joined
Jul 2009
From
London
Posts
109
quadratic problem - please get me started
This is the question:
A strand of wire of length 32cm is cut into two pieces. One piece is bent to form a rectangle of width x cm and length... | 4 | [
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... | 45,238 | 45238 | |
Determinants, Adjoint Matrix
August 29th 2009, 04:25 AM
adam63
Determinants, Adjoint Matrix
I need to prove that |adj(A)|=|A|^(n-1) for every non singular A in F^nxn, while n>2.
The solution says:
http://img190.imageshack.us/img190/1217/43950593.png
I can understand the first equality - |adj(A)|=||... | 5 | [
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Discrete Time Filter Design
One of the primary motivating factors for utilizing the z-transform and analyzing the pole/zero plots is due to their relationship to the frequency response of a discrete-time system. Based on the
position of the poles and zeros, one can quickly determine the frequency response. This is a re... | 4 | [
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Process for a Gamma distribution with non integer shape parameter
up vote 4 down vote favorite
I am sampling the distribution of lifetimes of computers participating in massive volunteer computing initiatives (BOINC projects). While a phenomenological Weibull distribution makes a good
description, I find that a better... | 4 | [
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what is the probability that a scissor became the champion?
up vote 16 down vote favorite
2
Here is a question from one of my students:
suppose 8 players are in an elimination match. The players are marked with marked with either R (for rock), P (for paper) or S (for scissors). If two players are marked with the same... | 5 | [
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... | 45,242 | 45242 | |
How many unique combinations in this scenario?
July 10th 2012, 08:52 AM
MathinTExas
How many unique combinations in this scenario?
Hello everyone. I need some help answering this question. I have 16 colors to choose from, and I can arrange any 15 in a row at my choosing, but the following example would not count... | 4 | [
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-0.102... | 45,243 | 45243 | |
U substitution
October 21st 2009, 12:49 PM #1
Junior Member
Joined
Mar 2009
Posts
63
U substitution
Quick question about u substitution. When do you know when you need to change coordinates? I remembered learning about this in my second course of calculus, and now i have to revisit it, but i
forgot h... | 4 | [
-0.00848388671875,
0.018310546875,
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0.06640625,
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0.061767578125,
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0... | 45,244 | 45244 | |
Approximation
Figure 1: A bank stack contains one-hundred $100 bills, and is worth $10,000. How many bank stacks make up a trillion dollars? (credit: Andrew Magill)
The U.S. federal deficit in the 2008 fiscal year was a little greater than $10 trillion. Most of us do not have any concept of ho... | 4 | [
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0.0218505859375,
-0.029052734375,
-... | 45,245 | 45245 | |
simple probability.
July 14th 2008, 05:31 AM #1
Junior Member
Joined
Jun 2008
Posts
51
simple probability.
in camelot it never rains on friday, saturday, sunday or monday. the probability that it rains on a given tuesday is $(1/5)$. for each of the two remaining days, wednesday and thursday, the
cond... | 4 | [
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-0.076171875,
-0.061035... | 45,246 | 45246 | |
Mixed Numbers gone bad...
March 12th 2010, 03:21 PM #1
Newbie
Joined
Mar 2010
Posts
8
Mixed Numbers gone bad...
I've worked and re-worked this problem over the last couple of days and cannot understand where I'm going wrong. This is also the first time I'm attempting to use LaTeX so forgive me if I do it... | 4 | [
-0.05810546875,
0.0081787109375,
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0.11474609375,
-0.0166015625,
... | 45,247 | 45247 | |
What is a Kelley ring?
up vote 11 down vote favorite
3
I've heard that in some book by someone named Kelley, perhaps an early edition of John L. Kelley's General Topology, the author gave a definition of a ring which turned out to be weaker than the
usual definition. I seem to recall the problem involved taking some s... | 4 | [
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0.002593994140625,
0.0534667968... | 45,248 | 45248 | |
Poker Probability Help
November 5th 2009, 02:05 AM #1
Newbie
Joined
Nov 2009
Posts
3
You have Kc Kd, and $1300 in front of you. You raise to $50, and your opponent in the small blind, who also had $1300 when the hand began, re-raises to $300. You believe she has either QQ, AK, or
AA. The flop comes Jc... | 4 | [
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0.125,
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0.05322265625,
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0.004333496093... | 45,249 | 45249 | |
particular solution of diffential equation
1. May 1st 2014, 07:20 AM #1
2. May 1st 2014, 08:44 AM #2
Re: particular solution of diffential equation
This is all correct. Solving for your stationary point you get
$C=-4x$
The problem asks for a stationary point on the $x$ axis, i.e. $x=0$... | 5 | [
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0.02294921875,
0.00396728515625,
-0.0703... | 45,250 | 45250 | |
extension of surface homeomorphism
MathOverflow is a question and answer site for professional mathematicians. It's 100% free, no registration required.
Can anyone give me a reference (or proof sketch) for the fact that there are psuedo-Anosov diffeomorphisms of closed hyperbolic surfaces w... | 4 | [
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0.03125,
0.052001953125,
-0.091796875,
-0.0286865... | 45,251 | 45251 | |
Proof - Implication signs
November 12th 2009, 12:57 AM #1
Member
Joined
Feb 2009
Posts
81
Proof - Implication signs
Hi all,
For these pairs of statements replace ... with $\Rightarrow \text{,} \Leftarrow \text{ or }\Leftrightarrow$. Assume $N$ is a positive Integer.
The last digit of $N$ is 1 .... | 4 | [
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0.0274658203125,
0.001434326171875,
0.06176757812... | 45,252 | 45252 | |
Math Forum Discussions
Re: Turning a Sequence into a List?
Posted: Apr 25, 2013 2:51 AM
On Tuesday, April 16, 2013 12:34:27 AM UTC-4, Rob wrote:
> Hello, I'm playing with a problem with minimum coins to make change.
>
> Here's a problem spot where I look at ways to make up 52 and 53 cents
>
> (later I'll use v = Range... | 5 | [
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0.025146484375,
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0.03466796875,
... | 45,253 | 45253 | |
Multivariable Limits
Date: 12/01/1999 at 13:28:55
From: John McFerrin
Subject: Multivariable limits problem
I have to find a function f(x,y) such that
lim(y->0)lim(x->0) f(x,y) = lim(x->0)lim(y->0) f(x,y)
And I can't figure out what kind of function would yield such a
bizarre result. If you could help, I woul... | 4 | [
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-0.0654296875,
-0.0810546875,
0.0... | 45,254 | 45254 | |
Statistics - PDF/Probability
March 4th 2014, 03:10 AM #1
Member
Joined
Nov 2013
From
Philadelphia
Posts
156
Statistics - PDF/Probability
The length of time that a machine operates without failure is denoted by X and the length of time to repair a failure is denoted by Y.
X and Y are independent ... | 5 | [
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-0... | 45,255 | 45255 | |
proving that a derivative is equal to a function
November 5th 2009, 09:32 AM #1
Junior Member
Joined
Mar 2008
Posts
30
proving that a derivative is equal to a function
I was given this problem in my calculus class and I have ablsolutely no idea how to solve it. Any help would be greatly appreciated.
... | 4 | [
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-0.00799560546875,
0.0155029296875,
0.060... | 45,256 | 45256 | |
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Topic: How do I do this???
Replies: 3 Last Post: Jan 24, ... | 4 | [
-0.036865234375,
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0.04833984375,
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0... | 45,257 | 45257 | |
Hamiltonian paths where the vertices are integer partitions
up vote 12 down vote favorite
3
Hello,
I have been working on this problem for several months now but have not made much progress. It concerns the set of all integer partitions of n.
Let the vertices of the graph G=G(n) denote all the p(n) integer partition... | 5 | [
-0.04150390625,
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0.0216064453125,
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0.0021820068359375,
0.000938415... | 45,258 | 45258 | |
Bacteria Problem
March 30th 2006, 08:17 AM
mazdatuner
Bacteria Problem
This poblem Involves bacteria...
there are initially 4000 bacteria per mililiter in a sample. after one hour their concentration increases to 6000 bacteria per mililiter.
a) what is the general exponetial equasion?
b) How many bac... | 4 | [
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0.018310546875,
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0.0031280517578125,
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0.09326171875,
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0.048828125,
0.0693359375,
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-0.004150390625,
-0.021484375,
-0... | 45,259 | 45259 | |
[SciPy-user] Characteristic polynomial
Robert Kern robert.kern@gmail....
Sun Dec 23 12:42:30 CST 2007
Nikolas Karalis wrote:
> Hello again. I return with another question regarding characteristic
> polynomials.
>
> I am computing the characteristic polynomials for matrices. And while
> (for millions of them) i get t... | 5 | [
0.007354736328125,
0.0238037109375,
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0.0230712890625,
-0.07080078125,... | 45,260 | 45260 | |
Reduced system of representatives
November 29th 2007, 04:28 PM #1
Newbie
Joined
Nov 2007
Posts
21
Reduced system of representatives
Show that if c1 , . . . , cφ(m) is a reduced system of representatives modulo any m > 2 then c + · · · + c ≡ 0 (mod m).
<<Completely lost.
$c_1,c_2,...,c_{\phi(m)}... | 5 | [
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... | 45,261 | 45261 | |
The Back and Forth Nudging algorithm for oceanographic data
The “Back and Forth Nudging” algorithm for oceanographic data
assimilation
Didier Auroux1 and Jacques Blum1
1
Universi... | 4 | [
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0.043212890625,
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0.02... | 45,262 | 45262 | |
inequality
Please help me with this question: Solve $sin(-2x + \frac{\pi}{6}) = \frac{1}{2}$ for $-\pi \leq x \leq 2\pi$
Hello, $-\pi \le x \le 2 \pi \implies -4 \pi \le -2x \le 2 \pi \implies -4 \pi +\frac \pi 6 \le -2x + \frac \pi 6 \le 2 \pi+\frac \pi 6$ Let $X=-2x +\frac \pi 6$ So now, the problem is to solve $\si... | 4 | [
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0.0400390625,
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0.02978515625,
-0.033935546875,
0.05078125,
0.038... | 45,263 | 45263 | |
tamely branched cover over P^1
up vote 1 down vote favorite
k is an algebraically closed field, X is a smooth, connected, projective curve over k. f: X-->P^1 is a finite morphism. Let t be a parameter of P^1, suppose f is etale outside t=0 and t=\infty, and
tamely ramified over these two points. Prove that f is a cycl... | 5 | [
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-0.01116943359375,
-0.1357421875,
-0.0893... | 45,264 | 45264 | |
When is a Banach Algebra $C^\star$
up vote 4 down vote favorite
1
I know that if there are enough Hermitian elements in a Banach algebra, then the Banach algebra is stellar. In particular, I'm interested in the two spaces $B(L^1(S^1,\Sigma,\mu))$ the space of
bounded linear operators on Lebesgue integrable functions o... | 4 | [
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0.00518798828125,
0.0262451171875,
0.01806... | 45,265 | 45265 | |
Navigation Problems - Problem 2
Brightstorm is like having a personal tutor for every subject
See what all the buzz is about
Check it out
Navigation Problems - Problem 2 3,090 views
Let’s try a harder example. Here we have a plane travelling 350 per hour at a heading of 210 degrees. The wind is 70 miles per hour fr... | 5 | [
0.04931640625,
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... | 45,266 | 45266 | |
Math Help
May 2nd 2008, 07:15 PM #1
Newbie
Joined
Apr 2008
Posts
8
I can't seem to figure out what I am doing wrong
express in form a/b
0.9 (bar)
So I start...
x = 0.99999...
10x = 9.9999...
LHS:
10x - x = 9x
RHS:
9.9999 - 0.9999 = 9
so 9x = 9
thus x = ... | 4 | [
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0.000953674316406... | 45,267 | 45267 | |
How to solve a generalization of the Coupon Collector's problem
up vote 5 down vote favorite
4
The coupon collector's problem is a problem in probability theory that states the following (from wikipedia):
Suppose that there are $n$ coupons, from which coupons are being collected with replacement. What is the prob... | 5 | [
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Math Forum Discussions - Thoughts on unique factorization interpretation
Date: Dec 17, 2013 2:43 AM
Author: fom
Subject: Thoughts on unique factorization interpretation
When I had been thinking about arithmetic
because of Dan Christensen's threads, I
did a great deal of analysis only to have
arrived at a seemingly tr... | 4 | [
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0... | 45,269 | 45269 | |
implicit form
June 29th 2008, 09:13 AM #1
Junior Member
Joined
Jun 2008
Posts
48
implicit form
Hi everyone,
If anyone could help to check if no mistake in my calculation.
Here is the question and my answer:
Hence find, an implicit form, the general solution of the differential equation
... | 5 | [
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0.005035400390625,
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0.010009765... | 45,270 | 45270 | |
Unreduced Suspension Isomorphism
up vote 2 down vote favorite
1
Tending to a lecture on homotopy theory, the following question occured to me (is that a correct sentence?):
Given a pointed space $(X,x)$, is the UNREDUCED suspension map $S:\pi_k(X,x) \rightarrow \pi_{k+1}(SX, \ast)$ a group homomorphism?
Here unreduc... | 4 | [
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0.01232910... | 45,271 | 45271 | |
ig
Read BRE_Soakaway_Design_Guide.pdf text version
digest
Soakaway design
Digest 365
Soakaways have been the traditional way to dispose of stormwater from buildings and paved areas remote from a public sewer or watercourse. In recent years, soakaways have been used within urban, fully-sewered areas to limit the ... | 5 | [
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The Axiom of Choice in Type Theory
In conclusion, we examine the role of the Axiom of Choice in type theory. The type theory we consider here is the constructive dependent type theory (CDTT) introduced^[1] by Per Martin-Löf (1975,
1982, 1984) . This theory is both predicative (so that in particular it lacks a type of ... | 4 | [
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-0.020... | 45,273 | 45273 | |
mutual hitting measure between two sets
up vote 3 down vote favorite
Given disjoint nonempty subsets $X_1, X_2$ of the state space of a finite irreducible Markov chain, there are unique measures $\mu_1$ on $X_1$ and $\mu_2$ on $X_2$ such that (a) starting from a $\
mu_1$-random point $x$, if one walks until one first ... | 5 | [
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... | 45,274 | 45274 | |
Intersection of three planes
March 24th 2008, 09:44 AM #1
Solve each of the following systems of equations. Give a geometrical interpretation of each system and its solution.
1. x - y + 3z = 4
2. x + y + 2z = 2
3. 3x + y + 7z = 9
OK so the first thing I did was check to see if any of the equation... | 5 | [
-0.04296875,
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0.0211181640625,
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... | 45,275 | 45275 | |
Number of solutions of x^2 + xy + y^2 = 27 in Q
How many solution does the $x^2+xy+y^2=27$ equation have in the set of $\mathbb{Q}$?
There are infinitely many rational solutions to this equation. One family of solutions comes from taking y to have numerator –3, and using the continued fraction expansion of $\sqrt3$. ... | 5 | [
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0.033203125,
-0.03271484375,
-0.0981... | 45,276 | 45276 | |
R: System NF Calculations
[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]
R: System NF Calculations
• Subject: R: [amsat-bb] System NF Calculations
• From: "i8cvs" <domenico.i8cvs@xxxxxx>
• Date: Sun, 20 May 2001 05:23:01 +0200
Hi Scott,
Noise Figure,noise bandwid... | 5 | [
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-0.0047607421875,
0.039306640625,
0.0859375,
-0.02648925781... | 45,277 | 45277 | |
Necessery and Sufficient Condition for Extention of Convolution Semigroup
Mohd Jaffar, Mai Zurwatul Ahlam (2007) Necessery and Sufficient Condition for Extention of Convolution Semigroup. Masters thesis, Universiti Putra Malaysia.
Abstract
Let and be real - valued continuous functions and ( ptf,(qtg,p and q be cons-t... | 4 | [
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0.0301513671875,
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-0.02197265625,
-0.0035858154... | 45,278 | 45278 | |
Is this correct? - showing analytic function is constant.
February 8th 2010, 05:57 PM
platinumpimp68plus1
Is this correct? - showing analytic function is constant.
for analytic function f:A-->C, where A is an open connected set. If f(A) is completely contained in the line {x+iy | x=2y}, show that f is constant.
... | 5 | [
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... | 45,279 | 45279 | |
elp
Physics[D_] - indexed covariant/contravariant differential operator with respect to curvilinear spacetime coordinates
Calling Sequence
D_[mu](A)
D_[mu](A, [X])
D_(A)
D_(A, [X])
Parameters
mu - a name representing an integer number between 0 and the spacetime dimension, can also be the number itsel... | 4 | [
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-0.07861328125,
... | 45,280 | 45280 | |
Power of 120
Date: 06/12/2001 at 11:43:09
From: Grabowski
Subject: Exponents
Is there a quick way to work out 1.05 to the power of 120? The only
way I can think of is to take 1.05 and keep multiplying it by itself,
120 times.
Date: 06/12/2001 at 12:31:37
From: Doctor Peterson
Subject: Re: Exponents
Hi, Grabowski... | 4 | [
0.032470703125,
0.06201171875,
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0.040771484375,
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0.048828125,
-0.10546875,
0.... | 45,281 | 45281 | |
dy
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Here's the question you clicked on:
Cemantha Group Title
A rectangular pyramid... | 4 | [
0.0439453125,
0.053466796875,
0.06396484375,
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... | 45,282 | 45282 | |
Basic Algebraic Formula
Top
Algebra is a branch of mathematics which includes large number of sub concepts. There are some Algebra formulas which are defined to solve algebraic problems without any confusion and getting correct
results. Some basic college algebra formulas are mentioned below:
Exponent laws
– These l... | 4 | [
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0.07666015625,
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0.070312... | 45,283 | 45283 | |
Is vesica piscis a maximal length curve constrained to two points?
up vote 2 down vote favorite
Let $r(t), t\in [0,1]$ be a continuous piecewise $C^1$ curve on the plane where $r(0)=(0,0)$ and $r(1)=(1,0)$. The distance $|r(t)|$ is a non-decreasing function and the distance $|r(t)-(1,0)|$ is a
non-increasing function.... | 5 | [
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0.0145263671875... | 45,284 | 45284 | |
different results
October 20th 2011, 03:10 AM #1
Senior Member
Joined
Oct 2009
Posts
459
different results
When integrating (sec x)^2 / (1 - tan x) I obtained ln(mod(1-tan x)) for this using the substitution u=tan x. Why does Wolfram obtain the same result but it is negative? Why does it not use the
... | 5 | [
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-0.116... | 45,285 | 45285 | |
GMAT questions
January 18th 2007, 08:15 AM #1
Newbie
Joined
Jan 2007
Posts
19
GMAT questions
Hi everyone,
I am taking the GMAT in two days and yesterday I started taking a GMAT prep test, which I flunked because it is so much harder than the problems in the 4 GMAT books that I have been studying. I
... | 4 | [
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Math Forum Discussions
Re: A good probability puzzle but what is the right wording?
Posted: Feb 4, 2013 9:33 AM
On Mon, 04 Feb 2013 08:15:59 -0500, quasi <quasi@null.set> wrote:
>quasi wrote:
>>Paul wrote:
>>>
>>>The following puzzle is copied and pasted from the internet.
>>>
>>> Alice secretly picks two different r... | 5 | [
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0.0625,
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A regularly parametrized surface
December 28th 2012, 07:51 AM #1
Junior Member
Joined
Dec 2012
From
Britain
Posts
46
Thanks
2
A regularly parametrized surface
Let
γ : R2 → R3 be a unit speed curve of nonvanishing curvature and let its scalar curvature, torsion and Frenet frame be denoted κ, τ... | 4 | [
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Plane Flying Parametrically
Date: 06/28/99 at 15:58:13
From: Jason
Subject: Plane flying parametrically
I have been trying to figure out how to get the closest result. I
don't know which answer would be correct. The problem is:
The position of an airplane approaching its airport is described
parametrically by P_t =... | 5 | [
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Intuition Behind the Squeeze Theorem and Applications
Squeeze Theorem and Trigonometric Limits
Intuition and Solved Examples
The squeeze theorem espresses in precise mathematical terms a simple idea. In this page we'll focus first on the intuitive understanding of the theorem and then we'll apply it to solve calculus
... | 5 | [
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Relation of degree and genus of superelliptic curves
up vote 1 down vote favorite
1
Let $X$ be a smooth, projective and geometrically connected curve of genus $g\geq 3$ defined over $\mathbb C$. Suppose the function field $k(X)$ of $X$ takes the form $k(X)=\mathbb C(x)[y]$, where
$$y^a=f(x)$$ with $a\geq 3$ an integer... | 4 | [
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Prime-like elements of rings
up vote 5 down vote favorite
1
An element $p$ of a commutative ring $R$ is called "prime" if, for any $a,b\in R$, whenever $ab$ is a multiple of $p$, either $a$ or $b$ is a multiple of $p$.
Is there a word for the "prime-like" property that, whenever $ab$ is a multiple of $p^2$, either $a... | 4 | [
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product of rings
up vote 5 down vote favorite
2
I feel a need to apologies for this question, since it seems to be to basic to be asked.
in this question I am primarily concerned with commutative rings and therefore all rings here are assumed to be commutative (and unital of course), though the non-commutative analog... | 4 | [
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Converting Polar to Cartesian Equations
June 10th 2008, 08:09 AM #1
Newbie
Joined
Mar 2008
Posts
16
Converting Polar to Cartesian Equations
Hi there!
Im a little stuck on one of my questions and was hoping for a little bit of help.. So first, the question
Convert from polar to cartesian form, u... | 4 | [
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STATS Engineers and Scientists 2nd Edition Chapter 6.9 Solutions | Chegg.com
1. (a) The signed ranks are
The null and alternate hypotheses are H[0] : μ ≤ 14 versus H[1] : μ > 14.
The sum of the positive signed ranks is S[+] = 25. n = 7.
Since the alternate hypothesis is of the form μ > μ[0], the P-value is the area ... | 5 | [
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[SOLVED] Logarithm real analytic
November 16th 2009, 01:26 AM #1
Junior Member
Joined
Sep 2009
From
Johannesburg, South Africa
Posts
71
[SOLVED] Logarithm real analytic
I want to proof that the natural logarithm is real analytic.
For $x \in (0,2)$ I have $ln(x)=\sum_{n=1}^\infty \frac{(-1)^{n+1}}... | 5 | [
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Discrete Mathematics - PowerPoint
Discrete Mathematics, Part II
CSE 2353
Fall 2007
Margaret H. Dunham
Department of Computer Science and
Engineering
Southern Methodist University
•Some slides provided by Dr. ... | 5 | [
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How big is the Fourier transform of the log of a polynomial over the p-adic numbers
up vote 6 down vote favorite
Let $f(z_1,\dots,z_n)$ be a polynomial with $p$-adic coefficients, and let $g(z):=log\lvert f(z) \rvert$. If $\xi$ is a complex character of $\mathbb{Z}_p^n$ there exists a number $v=v(\xi)$ such
that $\xi$... | 4 | [
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Mach Five
7.04.2010
Transpositions and S_n
According to official TV listings, there is an upcoming episode of Futurama called
"The Prisoner of Benda"
involving a device which allows people to switch minds. The title seems to be a riff off
"The Prisoner of Zenda",
a novel in which a fictional king is abducted and ... | 4 | [
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