content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Evolutionary Algorithms 4 Recombination
GEATbx: Main page Tutorial Algorithms M-functions Parameter/Options Example functions www.geatbx.com
Evolutionary Algorithms 4 Recombination
4 Recombination
Recombination produces new individuals in combining the information contained in two or more parents (parents - mating... | 4 | [
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0.... | 11,700 | 11700 | |
product of two riemann integrable is riemann integrable
up vote -1 down vote favorite
first show you only need to consider squares of functions as f.g = 1/4 [(f+g)sqr - (f-g)sqr]. show then that you only need to consider only positive valued functions becuase f(x).g(x)=|f(x)|sqr. then
, if 0 <=f(x) <= M on [a,b] show ... | 5 | [
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0.046875,
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Graphing the Reciprocal Trigonometric Functions - Concept
Brightstorm is like having a personal tutor for every subject
See what all the buzz is about
Check it out
Graphing the Reciprocal Trigonometric Functions - Concept 11,867 views
The three cofunction identities are useful because they can be used to convert, f... | 4 | [
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0.... | 11,702 | 11702 | |
Regular Pentagon Construction Proof
Date: 11/26/2001 at 11:02:22
From: Joe Boehm
Subject: Geometry
What is the proof of the construction of a regular pentagon?
Date: 11/27/2001 at 10:45:43
From: Doctor Jubal
Subject: Re: Geometry
Hi Joe,
There is no one construction of a regular pentagon. There are many,
many wa... | 4 | [
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uniform space
Context
Topology
Basic concepts
Theorems
Examples
Uniform spaces
Idea
Uniform spaces were invented by André Weil, to capture a general notion of space for which it makes sense to speak of uniformly continuous maps. Such spaces include (pseudo)metric spaces and
topological groups.
A uniform structu... | 4 | [
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Invertible matrix
February 23rd 2010, 07:50 PM #1
Newbie
Joined
Jan 2010
Posts
22
Invertible matrix
I have to determine all values of h for which A is invertible and I really don't know what should be my first step( If anyone could guide me through this that would be awesome. Here's the matrix:
... | 5 | [
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... | 11,705 | 11705 | |
Each element of fundamental group of a topological group represented by homomorphism?
up vote 12 down vote favorite
3
This may be a fairly simple question. Suppose G is a (T0) topological group. Assume that G is path-connected, locally path-connected, and semilocally simply connected, so that covering space theory
app... | 5 | [
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0.032958984... | 11,706 | 11706 | |
Square Root
Date: 03/15/99 at 09:45:55
From: Sean Mooney
Subject: Square Root
Why cannot you take the square root of a sum or difference separately -
i.e. why is sqrt(9+4) not equal to sqrt(9) + sqrt(4)?
Date: 03/15/99 at 17:48:35
From: Doctor Rick
Subject: Re: Square Root
You want to know why the square root of ... | 4 | [
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Fortran
A (very) Brief Introduction to MPI: Fortran example
We'll start with the single processor code:
program monte_carlo
USE IFPORT
implicit none
integer*8 npts
parameter (npts = 1e10)
integer*8 i
real*8 f,sum
real*8 xmin,xmax,x
xmin = 0.0d0
xmax = ... | 5 | [
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Map Scale
SC120 Map Interpretation, Air Photos, and GPS
Module 2 - Map Scale
Reading Assignment: Chapters 1, 2, and 3 of Sebert text.
What Does "Scale" Mean?
Scale refers to the relationship between distance on a map (or aerial photograph) and corresponding distance on the ground.
Dis... | 4 | [
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differentiating through the integral
August 18th 2009, 12:35 PM #1
Newbie
Joined
Jul 2009
Posts
4
differentiating through the integral
The problem is as follows:
Solve for f(x), given
$f(x) = x + \int^{x}_{0}{(x-2t)f(t) dt}$
What I did:
1. Differentiate both sides wrt x, and partially ... | 5 | [
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some help on these please
January 25th 2010, 01:17 PM #1
Newbie
Joined
Jan 2010
Posts
2
some help on these please
1) How many radians does the minute hand of a clock rotate during your birthday?
2) A circular sector has an area of 122 cm^2 and a radius of 2 cm. what is the arc length of the sector?
... | 4 | [
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Homework Help
Posted by DIana on Sunday, October 31, 2010 at 9:22pm.
lisa cut a log into 4 pieces in 6 minutes. she then cut a smaller log into 8 pieces. how long should the job have taken if she worked at the same rate she had worked when cutting the first log? show
all work and prove your answer.
• Math - Reiny, ... | 4 | [
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An affine singular surface
up vote 3 down vote favorite
Let $n$ be a positive integer and let $A$ be the subring of ${\mathbb C}[x,y]$ generated by $x,xy,...,xy^n$. Let $S=Spec(A)$. This is an affine surface, which is clearly singular if $n\neq 1$. Is
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Calculating Timber Volumes
MICHIGAN FORESTS FOREVER TEACHERS GUIDE
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━┓
┃ TIMBER VOLUME CALCULATION PROCEDURE │ ┃
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━┛
Overview
Timber volume calculations can be done two ways; 1) by hand, or 2) using a spreadsheet. The calculations a... | 4 | [
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Nöther's Theorem
This theorem derives conservation laws from the variational principle
If you have a theory based on a variational principle, Nöther's Theorem furnishes you with conservation laws that come from the invariance of the principle under continuous groups of transformations.
For each parameter of the trans... | 4 | [
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Homework Help
Posted by priya on Wednesday, November 3, 2010 at 11:54pm.
A quadratic function is defined by
f(x)= 3x^2+4x-2. A linear function is defined by g(x)= mx-5. what values(s) of the slope of the line would make it a tangent to the parabola.
• math grade 11 - Bosnian, Thursday, November 4, 2010 at 2:40am
... | 4 | [
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where are these functions differentiable??
February 11th 2008, 12:00 AM #1
Member
Joined
Jan 2008
Posts
91
where are these functions differentiable??
a) $f(x) = 1 / sin(x)$ < -- function is differentiable everywhere except 1/2*pi and -1/2*pi...correct??
b) $g(x) = ln(x^2)$...dont know where this one... | 5 | [
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WebDiarios de Motocicleta
The STOC accepted papers, with some pointers to online versions, can be found here. I had two papers: Towards Polynomial Lower Bounds for Dynamic Problems and Changing Base without Losing Space. More
on them later.
The FOCS call for papers is
here
. An experimental feature is the lack of p... | 4 | [
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Euclidean volume of the unit ball of matrices under the matrix norm
up vote 13 down vote favorite
6
The matrix norm for an n-by-n matrix A is defined as |A|=max(|Ax|) where x ranges over all vectors with |x|=1, and the norm on the vectors in R^n is the usual Euclidean one. This is also called the
induced (matrix) norm... | 5 | [
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Generating all factors of a number given its prime factorization
up vote 10 down vote favorite
If you already have the prime factorization of a number, what is the easiest way to get the set of all factors of that number? I know I could just loop from 2 to sqrt(n) and find all divisible
numbers, but that seems ineffic... | 4 | [
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analytic geometry/graphing problem
Posted by Knights on Tuesday, March 19, 2013 at 1:47pm.
The vertices of a triangle are the points of intersection of the line y=-x-1, x=2 and y = 1/5x + 13/5. Find an equation of the circle passing through all three vertices.
I don't understand how to solve this: should I set them a... | 4 | [
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Tall-Wraith monoid
If $V$ is the theory of abelian groups, than a $V$-algebra is an abelian group, and the corresponding sort of Tall–Wraith $V$-monoid is a ring.
To understand the last example, we need to think about co-abelian group objects in the category of abelian groups. Abstractly, such a thing is an abelian gr... | 4 | [
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Altitude of a Model Rocket
Date: 10/26/1999 at 12:52:46
From: Jack L. Swayze Sr.
Subject: 3D trigonometry
I enjoy model rocketry. I especially like having youngsters
participate. The model rockets (as can be expected) will fly to some
unknown altitude over the rocket site. Of course, they will not go
straight, much ... | 5 | [
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... | 11,723 | 11723 | |
Bending Moment & Shear Force
Shear and Bending Moment Diagram :
The shear force diagram indicates the shear force withstood by the beam section along the length of the beam.
The bending moment diagram indicates the bending moment withstood by the beam section along the length of the beam.
It is normal practice to prod... | 5 | [
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0.... | 11,724 | 11724 | |
Homework Help
Posted by Tim on Tuesday, May 29, 2012 at 7:21pm.
A gardener wants to fence in her plot in two equal rectangular sections. If she has 120 yards of fence and the area of the entire plot is 384 yd 2, find the possible dimensions in yards of the
garden.
• College Algebra - Henry, Thursday, May 31, 2012 a... | 4 | [
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Math Forum Discussions
Re: Double Induction -- A brief note that may help
Posted: Jul 16, 2013 7:55 PM
shouldn't (a.b), be in it
> Assume (a,b) not in S and let let c be the smallest c in N for which (c,b) not
>
> in S. Next let d be the smallest d in N for which (c,d) not in S.
>
>
>
> Case c = 1. Then (1,d) not in... | 5 | [
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[SOLVED] Inverse function of an integral
June 27th 2008, 12:15 PM #1
[SOLVED] Inverse function of an integral
I have $f(x)=\int_0^x 1+sin(sin(t))dt$ and I must find $[f^{-1}(0)]'$. I'm asking you to help me finding the inverse function of f, I'll try to do the derivative.
One of my guesses would be that as I ... | 5 | [
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0.040283203125,
-0.0869140625,
0.078125,
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0.08447265625,
0.02880859375,
0.01611328125,
-0.00958251953125,
0.0191650390625,
-0.057373046875,
0.00970458984375,
0.05810546875,
0.0281982421... | 11,727 | 11727 | |
Math Help
September 18th 2005, 07:57 PM #1
Newbie
Joined
Aug 2005
Posts
8
Help!!!!
On a bus route between towns A and H, there are six other towns: B, C, D, E, F and G. Each segment of the route between two towns that passes through exactly two more towns is of length at least
23 km. Each segment of... | 4 | [
0.054443359375,
0.078125,
0.047607421875,
-0.061767578125,
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-0.0177001953125,
0.0079345703125,
0.0308837890625,
-0.08837890625,
-0.0051879... | 11,728 | 11728 | |
Pascal's Triangle and Combinations
Date: 06/05/98 at 10:05:25
From: Jesse Walker
Subject: Pascal's Triangle and Combinations
In Pascal's Triangle, there is a pattern where any given number from
the triangle is the sum of two numbers in the row before it that are
closest to the number. So in the fourth row down from ... | 4 | [
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Antoine Equation
Introduction
The Antoine Equation is a vapor pressure equation and describes the relation between vapor pressure and temperature for pure water between 0°C and 373.946°C. [Wikipedia]
For T in Kelvins and P i... | 4 | [
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Derivatives of Linear Functions - Concept
Brightstorm is like having a personal tutor for every subject
See what all the buzz is about
Check it out
Derivatives of Linear Functions - Concept 12,823 views
The derivative of a linear function mx + b can be derived using the definition of the derivative. The linear func... | 4 | [
-0.031005859375,
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0.042236328125... | 11,731 | 11731 | |
Differentiating a exponential function.
January 31st 2011, 02:54 AM #1
Newbie
Joined
Apr 2009
Posts
16
Differentiating a exponential function.
Differentiate (w.r.t x ) $e^{2logx + 3x}$
I tried to solve it as follows:-
$e^{2logx} + e^{3x}$
$\frac{\mbox{d}}{\mbox{dx}}(e^{2logx}) + \frac{\mb... | 5 | [
0.01214599609375,
-0.01507568359375,
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0.01409912109375,
0.072265625,
-0.0194091796875,
-0.0625,
0.052001953125,... | 11,732 | 11732 | |
Physics Archive | February 24, 2012 | Chegg.com
Physics Archive: Questions from February 24, 2012
• student4444 asked
0 answers
• Anonymous asked
2 answers
• Anonymous asked
1 answer
• supertramp19 asked
0 answers
• Anonymous asked
3 answers
• Anonymous asked
2 answers
... | 5 | [
-0.0296630859375,
0.01055908203125,
-0.0223388671875,
0.006622314453125,
-0.04541015625,
0.022216796875,
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0.051025390625,
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0.06298828125,
0.12060546875,
-0.01092529296875,
-0.01153564453125,
0.031494140625,
-0.047119140625,
0.0810546875,
0.018432617187... | 11,733 | 11733 | |
Homework Help
Posted by Liz on Saturday, June 30, 2012 at 2:17pm.
Find an equation of the line that is tangent to the graph of f and parallel to the given line.
Funtion:
f(x)=1/sqrt(x-1)
Line:
x+2y+7=0
• Calculus - bobpursley, Saturday, June 30, 2012 at 5:05pm
f'=-1/2 * (x-1)^-1.5
that is the slope th... | 5 | [
-0.09228515625,
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0.0234375,
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0.07763671875,
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-0.036865234375,
0.091796875,
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-0.07666015625,
-0.0634765... | 11,734 | 11734 | |
Clarifying what this is asking (Reflexive, Symmetric, AntiSymmetric, and Transitive)
January 23rd 2010, 11:04 PM #1
Newbie
Joined
Jan 2010
Posts
5
Clarifying what this is asking (Reflexive, Symmetric, AntiSymmetric, and Transitive)
So I get the basics of these four topics (reflexive, symmetric, antisymme... | 4 | [
-0.0205078125,
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0.05078125,
-... | 11,735 | 11735 | |
Instant CIC
Posted by Markus Nentwig on May 8 2012 under Matlab | Basics | Tips and Tricks
Summary:
A floating point model for a CIC decimator, including the frequency response.
Description:
A CIC filter relies on a peculiarity of its fixed-point implementation: Normal operation involves repeated internal overflow... | 4 | [
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A second outline of a density-increment argument
From Polymath1Wiki
Introduction
One of the proof strategies we have considered seriously is the density-increment method. The idea here is to prove that if $\mathcal{A}$ is a subset of [3]^n of density δ with no combinatorial line
then there is a combinatorial subspac... | 4 | [
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solve by substitution
3x-2y=-11 x=2y-9 i got the answer x=2. Is that right?
To check your answer substitute it into each equation. Putting x = 2 into the first equation 3x-2y = -11 gives 6-2y=-11, 17=2y, y=17/2. Putting x = 2 into the second equation x = 2y-9 gives 2 = 2y-9,
11=2y, y=11/2. These are not consistent so ... | 4 | [
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0.00012111663818359375,
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0.000591278076171875,
-0.0354003906... | 11,738 | 11738 | |
Complexity Problem
03-23-2007
QuestionC
Complexity Problem
I've been wanting to ask this somehow for a while, but had trouble phrasing it as a non-math question. What follows admittedly isn't really a programming problem. It is proving something very
important about Turing machines and complexity.
Presu... | 5 | [
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-0.0603... | 11,739 | 11739 | |
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Topic: Linear independence of eigenvectors
Replies: 7 Las... | 5 | [
-0.0908203125,
-0.024169921875,
-0.053466796875,
-0.0279541015625,
0.0247802734375,
0.0703125,
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0.07763671875,
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0.01123046875,
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0.047119140625,
-0.04345703125,
0.06... | 11,740 | 11740 | |
Two vector questions (high school level)
July 27th 2008, 04:51 PM #1
Newbie
Joined
Jul 2008
Posts
11
Two vector questions (high school level)
1) Expand and simplify: (-2a + 3b) dot (5a - b). (a and b being vectors)
2) Explain how to prove if 4 given points are coplanar. Determine if A(3, 1, 0), B(2,... | 4 | [
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0.04052734375,
-0.0556640625,
-0.021972... | 11,741 | 11741 | |
FUNdamental Theorem of calculus
January 28th 2009, 02:06 PM #1
Member
Joined
Oct 2008
Posts
109
FUNdamental Theorem of calculus
Express the limit, $\lim_{n \rightarrow \infty} \sum_{i=1}^{n} \frac{e^{\frac {i}{n}}}{n}$ as a definite integral and evaluate it using the Fundamental Theorem of the Calculus
... | 5 | [
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0.025390625,
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0.060546875,
-0.0019302368164062... | 11,742 | 11742 | |
Example: Testing for Primality
This section describes two methods for checking the primality of an integer n, one with order of growth [[]], and a "probabilistic" algorithm with order of growth []. The exercises at the end of this
section suggest programming projects based on these algorithms.
Searching for divisors
... | 4 | [
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0.0498046875,
-0.... | 11,743 | 11743 | |
K-theory
Context
Cohomology
Special and general types
Special notions
Variants
Operations
Theorems
Higher spin geometry
Contents
Idea
What is called topological K-theory is a collection of generalized (Eilenberg-Steenrod) cohomology theories whose cocycles in degree 0 on a space $X$ can be represented by pai... | 4 | [
-0.04052734375,
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0.0172119140625,
0.0751953125,
-0.034423828125,
0.00007820129394531... | 11,744 | 11744 | |
Trimble n-category
Context
Higher category theory
Basic concepts
Basic theorems
Applications
Models
Morphisms
Functors
Universal constructions
Extra properties and structure
1-categorical presentations
Content
Todd Trimble’s definition of weak $n$-category is an example of a notion of weak omega-category wh... | 4 | [
0.0260009765625,
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0.015625,
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-0.021728515625,
0.039794921875,
0.052... | 11,745 | 11745 | |
Complex Numbers raised to the power?
February 12th 2013, 03:48 PM
kmalik001
Complex Numbers raised to the power?
If v = z(1)^6* z(2)^−4
determine |v| and angle(v). Also, obtain v in cartesian form.
where z1= 3 +i
z2 = -5 + 5i
I don't know how to raise a complex power to a power. I have searched... | 5 | [
-0.11328125,
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0.09130859375,
0.031494140625,
0.033447265625,
-0.07080078125,
0.01397... | 11,746 | 11746 | |
Homework Help
Posted by CMM on Monday, April 4, 2011 at 8:03pm.
Find the value of the definite integral:
int= integral sign
int((x + 2)/(x^(3/2)),x= 16..25)dx
I have no idea how to start this... would I get rid of the fraction?
• Calc, - Alex, Monday, April 4, 2011 at 8:35pm
you do it by converting it to in... | 5 | [
0.036376953125,
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0.03125,
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0.01507568359375,
0.031005859375... | 11,747 | 11747 | |
analysis (mathematics) :: Graphical interpretation
analysis
Article Free Pass
Graphical interpretation
The above ideas have a graphical interpretation. Associated with any function f(t) is a graph in which the horizontal axis represents the variable t and the vertical axis represents the value of the
function. Choos... | 4 | [
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-0.... | 11,748 | 11748 | |
Finding a Point on a Circle
Date: 5/28/96 at 16:27:40
From: Anonymous
Subject: Finding a point on a circle
Given a point on the circumference of a circle P(x0,y0), the center
of the circle C(a,b), and the X coordinate of another point on the
circumference of the circle P(x1,y1), how do I find the y1 value?
I already... | 4 | [
-0.044677734375,
0.034423828125,
-0.09130859375,
0.00006437301635742188,
0.04931640625,
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0.099609375,
0.07275390625,
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0.08154296875,
0.1025390625,
0.01055908203125,
-0.10888671875,
... | 11,749 | 11749 | |
Given f(x) = sin(x) , g(x) = 1/x , h(x) = |x|, state h(g(f(x)))?
May 27th 2011, 04:05 PM #1
Newbie
Joined
May 2011
Posts
1
Given f(x) = sin(x) , g(x) = 1/x , h(x) = |x|, state h(g(f(x)))?
Given f(x) = sin(x) , g(x) = 1/x , h(x) = |x|, state h(g(f(x)))?
So I'm able to do the first two steps
f(g(s... | 4 | [
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0.044921875,
0.0108642578125,
... | 11,750 | 11750 | |
finding unknown constants in a function using calculus...
September 12th 2012, 08:00 AM #1
Newbie
Joined
Aug 2012
From
sweden
Posts
8
finding unknown constants in a function using calculus...
hello, so i'm stuck on this problem where im given the function with constants and the point it passes throug... | 4 | [
-0.017333984375,
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0.0751953125,
-0.09423828125,
-0.0134277343... | 11,751 | 11751 | |
The Quest for the Cosmological Parameters - M. Plionis
3.4. M/L observations
Each astronomical object is characterized by a quantity called Mass-to-Light ratio, M/L. A convenient scaling of M/L is done by using the value of the solar neighbourhood, M[] / L[]. Then, observing
M/L > M[] / L[] would imply the existence o... | 4 | [
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0.06298828125,
0.05322265625... | 11,752 | 11752 | |
Large-Scale Surveys and Cosmic Structure - J.A. Peacock
4.1. Fourier analysis of density fluctuations
It is often convenient to consider building up a general field by the superposition of many modes. For a flat comoving geometry, the natural tool for achieving this is via Fourier analysis. For other
models, plane wav... | 4 | [
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-0.064453125,
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0.111328125,
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-0.02172851562... | 11,753 | 11753 | |
Prime Number Formula
Date: 11/11/2001 at 18:10:27
From: Ri
Subject: Prime number formula
I have to find out the formula Leonhard Euler used to find prime
numbers. I just need the formula so I can put it into a spreadsheet.
Thank you.
Date: 11/11/2001 at 19:21:56
From: Doctor Paul
Subject: Re: Prime number formul... | 4 | [
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0.... | 11,754 | 11754 | |
Exercise 22
Exercise 22.2-1
Show the d and p values that result from running breadth-first search on the directed graph of Figure 22.2(a), using vertex 3 as the source.
Answer: d Values
... | 5 | [
-0.00188446044921875,
0.04443359375,
0.00897216796875,
-0.0810546875,
0.08447265625,
0.0546875,
0.0673828125,
-0.017578125,
-0.0289306640625,
0.0286865234375,
-0.0303955078125,
0.019775390625,
0.033203125,
0.039306640625,
-0.002838134765625,
-0.0181884765625,
0.0179443359375,
0.008... | 11,755 | 11755 | |
Background fields in twisted differential nonabelian cohomology
The following are notes from an early talk on the material developed at differential cohomology in a cohesive topos. Related later lectures notes include twisted smooth cohomology in string
theory and geometry of physics.
This are notes for a talk... | 4 | [
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0.0072021484375,
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0.07470703125,
-0.03515625,
-0.... | 11,756 | 11756 | |
Two problem sums
December 30th 2005, 02:07 AM
shaurya
Two problem sums
1.BY selling a Coat for $630, a shopkeeper gains 5%.find the cost price of coat
2.Paul Bought a car for $960 and sold it to David at a profit of 5%.David Sold it to Tommy at a profit of 10%.Find The money paid by Tommy for the car
:c... | 4 | [
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0.06103515625,
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0.0673828125,
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0.0219726... | 11,757 | 11757 | |
Boardman-Vogt tensor product
Context
Higher algebra
Algebraic theories
Algebras and modules
Higher algebras
Model category presentations
Geometry on formal duals of algebras
Theorems
Contents
Idea
The Boardman-Vogt tensor product is a natural tensor product on symmetric operads. It makes the category Operad o... | 4 | [
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0.0234375,
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-0.0... | 11,758 | 11758 | |
Experiment
My Home Page | Smart Home Page | The Smile Home Page | The Experiment | Analysis | Quiz
EXPERIMENT: MEASURING THE ACCELERATION OF GRAVITY: a[g]
Aristotle's idea that falling bodies on earth are seeking out their natural places sounds strange to us to... | 4 | [
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0.05786... | 11,759 | 11759 | |
CFTs corresponding to affine Lie algebras
up vote 4 down vote favorite
4
• I want to know how one can write down a CFT such that its conserved currents will satisfy some chosen (affine) Lie algebra $G$.
On the few pages leading up to page 192 in here one can see see the analysis of the CFT obtained in the compa... | 4 | [
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0.00... | 11,760 | 11760 | |
Cheng space
Cheng spaces
Idea
A Cheng space is a version of a measurable space developed by Henry Cheng? for constructive mathematics. Even in classical mathematics, however, Cheng spaces are more general than standard measure
spaces. On the other hand, if we equip a measurable space with a $\sigma$-ideal of null sub... | 4 | [
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0.0380859375,
-0.00152587890... | 11,761 | 11761 | |
A max function of 2 variables max(a,b)
September 24th 2011, 04:23 PM #1
Junior Member
Joined
Sep 2011
Posts
28
A max function of 2 variables max(a,b)
The max function is a function of 2 variables and is defined as follows
max(x,y) = x if x is greater or equal to y or it's = y if x is less than y
... | 4 | [
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0.11083984375,
0.1240234375,
0.07080078125,
-0.126953125,
-0.086... | 11,762 | 11762 | |
Algorithm for arranging Cartesian points
up vote 19 down vote favorite
2
I have few Cartesian points of the form : (x,y)
where x and y both are non-negative integers.
For e.g.
(0,0) , (1,1), (0,1)
I need an algorithm to arrange the above points
in such a way that going from one point to other
changes either x or y b... | 4 | [
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0.0341796875,
0.0693359375,
-0.035888671875,
0.02783203125,
0.00939941... | 11,763 | 11763 | |
Canonic identification of the tangent space of the Grassmannian
up vote 1 down vote favorite
let $Gr(k,V)$ be the grassmannian of k-dimensional subspaces of the complex vector space $V$ of dimension $n>k$.
I know that, given $K\in Gr(k,V)$, $T_{Gr(k,V),K}\simeq Hom(K,V/K)$, but i want to prove that this isomorphism i... | 4 | [
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-0.018310546875,
-0.03662109375,
0.0361328125,
-0.048583984375,
0.05615... | 11,764 | 11764 | |
What is the crucial difference the Maynard/Tao approach and Goldston-Pintz-Yildirim that extends to prime k-tuples with $k>2$
up vote 21 down vote favorite
7
Suppose $m$ is a positive integer. A quantity of interest is
$$ H_m = \liminf_{n\to\infty} \left(p_{n+m} - p_n \right) $$
The twin prime conjecture, is, of cou... | 4 | [
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0.043212890625,
-0.01177978515625,
-0.0021820068359375,
-... | 11,765 | 11765 | |
How accurate can genetic predictions be?
Abstract
Background
Pre-symptomatic prediction of disease and drug response based on genetic testing is a critical component of personalized medicine. Previous work has demonstrated that the predictive capacity of
genetic testing is constrained by the heritability and prevalen... | 4 | [
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0.033447265625,
-0.1025390625,
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-0.0306396484375,
0.0033569335... | 11,766 | 11766 | |
Weekly Problem 45 - 2012
Copyright © University of Cambridge. All rights reserved.
'Weekly Problem 45 - 2012' printed from http://nrich.maths.org/
Let the number of boys in the class be $x$.
Hence $\frac{10}{10+x}\times\frac{9}{9+x} = 0.15 = \frac{3}{20}$.
Simplifying gives $1800=3(10+x)(9+x)$ and then $x^{2}+19x-5... | 4 | [
0.00970458984375,
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0.0361328125,
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0.08544921875,
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-0.015380859375,
-0.0235595703125,
0.0405... | 11,767 | 11767 | |
Lebesgue Integral
November 3rd 2010, 08:15 PM #1
Newbie
Joined
Sep 2010
Posts
16
Lebesgue Integral
Hi everyone
I coudnt have solved this problem, I hope you can give me some idea.
Let $E$ a measurable set and $f \in L_1(E)$, $f > 0$.
Prove that $\lim_{ n \rightarrow \infty} \int_E f^{1/n} d\... | 5 | [
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0.022705078125,
0.06298828125,
-0.054931640625,
0.125,
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0.140625,
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0.0247802734375,
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-... | 11,768 | 11768 | |
Homework Help
Posted by Katie on Thursday, October 27, 2011 at 6:35pm.
Lisa can shovel her drive way in 35 minutes. Tom can shovel the same drive way in 40 minutes. How long will it take them to do the job together?
• Help - Steve, Friday, October 28, 2011 at 5:27am
in one minute, Lisa can shovel 1/35 of the d... | 4 | [
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0.07763671875,
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-0.03076171875,
0.000... | 11,769 | 11769 | |
Can bird poop crack a windshield?
A woman called in to Car Talk to say that she believes the windshield on her parked car was cracked from falling bird poop. Is this possible? Let's find out.
If you would like to listen to this actual segment, here is the link to the Car Talk clip.
What starting info do I have? The ... | 5 | [
0.00982666015625,
0.01318359375,
0.00714111328125,
-0.0250244140625,
-0.00116729736328125,
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0.0101318359375,
0.1591796875,
-0.041259765625,
-0.03759765625,
0.041015... | 11,770 | 11770 | |
Econometrics by Simulation
Original Code
# Matching Item Information
# Imagine that you are asked to create a test from an item pool that you have.
# The item pool has 100 items and you have to create a test of 20 items in length.
# Easy right?
# The trick is that the test creators want the information on the test... | 4 | [
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0.046875,
-0.022216796875,
-0.05712890625,
0.0654296875,
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-0.00042724609375,
-0.0036163330078125,
0.0322265625,
-0.027099609375,
-0.01165771484... | 11,771 | 11771 | |
Happy Numbers
Date: 01/05/2006 at 18:05:04
From: margie
Subject: What is a "happy" number?
What is a "happy" number? What are all the two-digit "happy" numbers
between one and one hundred that are multiples of four? I have never
heard the term.
Date: 01/06/2006 at 00:55:39
From: Doctor Minter
Subject: Re: What i... | 4 | [
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0.08740234375,
0.01153564453125,
-0.0010833740234375,
-0.0419921875,
0.060546875,
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0.053466796875,
0.03564453125,
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0.083984375,
-0.006103515625,
-0.028564453125,
-0.06689453125,
-0.08935546875,
-0.0544... | 11,772 | 11772 | |
Values of the multiplicative group over a ring spectrum
up vote 4 down vote favorite
In his notes on elliptic cohomology, Lurie defines the multiplicative group $\mathbb{G}_m$ over a ring spectrum $A$ as $\operatorname{Spec} A[\mathbb{Z}]$. What is the value $\mathbb{G}_m(B)$ of the
represented functor at an $A$-algeb... | 4 | [
-0.0234375,
-0.01483154296875,
-0.125,
0.0224609375,
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0.07421875,
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0.051025390625,
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-0.0751953125,
0.08447265625,
0.1357421875,
0.0234375,
0.0238037109375,
-0.067382... | 11,773 | 11773 | |
How to make Ext and Tor constructive?
up vote 26 down vote favorite
22
EDIT: This post was substantially modified with the help of the comments and answers. Thank you!
Judging by their definitions, the $\mathrm{Ext}$ and $\mathrm{Tor}$ functors are among the most non-constructive things considered in algebra:
(1) Th... | 4 | [
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0.043212890625,
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0.007049560546875,
0.031982421875,
0.045166015625,
-0.0028839111328125,
0.0071411132812... | 11,774 | 11774 | |
Tanya Khovanova’s Math Blog
Solomon Golomb invented the name many years ago. He wasn’t aware that his definition would end up creating Googling problems, for when you search for such a mathematical object you will stumble upon
a lot of amphibians.
Similarly, you can divide the same shape into 9 congruent pieces (see ... | 4 | [
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0.01544189453125,
-0.07470703125,
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0.056396484375,
0.041748046875,
0.06591796875,
0.0228271484375,
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0.08447265625,
-0.031982421875,
-0.050537109375,
-0.02294921875,
0.0... | 11,775 | 11775 | |
Does the Continuum Hypothesis hold for sets of a certain rank?
up vote 9 down vote favorite
1
Hi I hope this question is accurate. Gödel and Cohen could show that the Continuum Hypothesis (CH) is independent from ZFC using models in which CH holds, and fails respectively. My question now is:
If we take a large enough... | 5 | [
0.046630859375,
-0.035888671875,
0.051025390625,
0.004302978515625,
0.0712890625,
0.0888671875,
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0.0498046875,
0.030517578125,
-0.060791015625,
-0.03271484375,
-0.0927734375,
0.035400390625,
0.0022430419921875,
0.035400390625,
0.0264892578125,
-0.03759765625,
0.00729... | 11,776 | 11776 | |
Scheffe's method
7. Product and Process Comparisons
7.4. Comparisons based on data from more than two processes
7.4.7. How can we make multiple comparisons?
7.4.7.2. Scheffe's method
Scheffe's method tests all possible Scheffé's method applies to the set of estimates of all possible contrasts among the factor leve... | 5 | [
0.01153564453125,
-0.134765625,
0.0213623046875,
0.047607421875,
0.07666015625,
0.042724609375,
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0.087890625,
-0.028076171875,
-0.02392578125,
-0.06640625,
-0.0341796875,
0.049072265625,
-0.1044921875,
-0.060791015625,
0.0133056640625,
0.006500244140625,
0.0037841796... | 11,777 | 11777 | |
How do you construct a symplectic basis on a lattice?
up vote 2 down vote favorite
Is this possible to do constructively? The only sources that I have for the possibility of this construction is an exercise in Lang's Algebra (on p. 598, I believe) which states that one can be
constructed, and then a construction given... | 4 | [
-0.045166015625,
0.0245361328125,
0.02392578125,
-0.03369140625,
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0.057861328125,
0.0196533203125,
-0.0289306640625,
-0.040283203125,
-0.039306640625,
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0.0303955078125,
-0.01123046875,
-0.0128173828125,
-0.031982421875,
-0.0324707031... | 11,778 | 11778 | |
Multiple choices:
1.
Decision alternatives
A)... | Course Hero
Question:
Multiple choices: 1. Decision alternatives A) should be identified...
Multiple choices:
1.
Decision alternatives
A) should be identified before decision criteria are established.
B) are limited to quantitative solutions
C) are evaluated... | 4 | [
0.01141357421875,
0.011474609375,
-0.06982421875,
-0.04345703125,
-0.07861328125,
0.002593994140625,
0.016357421875,
0.0194091796875,
0.0185546875,
0.04931640625,
0.07763671875,
-0.0849609375,
0.043701171875,
-0.0341796875,
-0.0439453125,
-0.04638671875,
0.08984375,
0.0109252929687... | 11,779 | 11779 | |
Hubble time dilation
From Conservapedia
The Hubble time dilation is a hypothetical effect of accumulation of time dilation (in curved space) with distance from observer, so for small distances it looks roughly propotional to the distance.
The exact effect is
dτ / dt = exp( − r / R[s]),
where τ is proper time at... | 4 | [
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0.00506591796875,
0.0245361328125,
0.08642578125,
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0.1181640625,
0.09130859375,
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0.0703125,
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-0.003448486328125,
0.0098876953125,
0.040283203125,
-0.07177734375,
0.078125,
-0.043701171875,... | 11,780 | 11780 | |
How can I convert from a two-tailed to a one-tailed test?
NOTE: This page has been delinked. It is no longer being maintained, and information on this page may be out of date.
SPSS FAQ
How can I convert from a two-tailed to a one-tailed test?
When you conduct a test of statistical significance, whether it is from a ... | 5 | [
-0.002227783203125,
-0.03125,
0.06689453125,
0.06689453125,
0.054443359375,
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0.0419921875,
0.005035400390625,
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-0.0196533203125,
0.0341796875,
-0.046630859375,
0.0228271484375,
-0.05... | 11,781 | 11781 | |
Regularization and renormalization
Eighty years ago, people encountered the first divergences - infinities - in the calculations based on quantum field theory: I chose Julian Schwinger as the top representative of these developments.
It was a somewhat technical development but in some sense, it was as big a revolution... | 4 | [
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0.00122833251953125,
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0.045166015625,
-0.036865234375,
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0.0771484375,
-0.06201171875,
0.01361083984375,
-0.060791015625,
0.0... | 11,782 | 11782 | |
Operator splitting for the KdV equation
The summer continues to allow some clearing of the backlog of projects accumulated during the academic year: Helge Holden, Kenneth Karlsen, Nils Risebro, and myself have uploaded to the arXiv the
paper “Operator splitting for the KdV equation“, submitted to Math. Comp.. This pa... | 4 | [
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-0.01031494140625,
0.0130615234375,
-0.05908203125,
-0.02490234375,
-0.0095825195... | 11,783 | 11783 | |
Can the Sum of 5 Odd Numbers Equal an Even Number?
Date: 01/05/2003 at 08:18:46
From: Charlie
Subject: Odd numbers that add to make an even number
What are 5 odd numbers which, when added, equal 32 ?
It is apparently logically impossible.
This is a riddle. A friend of mine says that there is an answer that
he has p... | 4 | [
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... | 11,784 | 11784 | |
Order theory for computer scientists
Haskell code
The header for the Haskell code in this file is:
import Data.Map as Map hiding (map)
import Data.Set as Set hiding (map)
type ℙ a = Set.Set a
type k :-> v = Map.Map k v
And, the ghc extensions used are:
-XTypeOperators -XTypeSynonymInstances \
-XParallelListComp... | 4 | [
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0.042236328125,
0.05859375,
-0.06787109375... | 11,785 | 11785 | |
patterns of fractions
In the year 1560, many warlords were trying to take control of Japan. At that time, a small region called Owari was ruled by the Oda clan. Powerful warlords in surrounding areas were invading Owari,
and people thought that the Oda clan would soon be lost. Nobunaga, who was the young leader of the... | 4 | [
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0.0024108... | 11,786 | 11786 | |
.
2. INHOMOGENEOUS UNIVERSE -- OBSERVATIONS
The inhomogeneity of the Universe has been a major aspect of cosmology over the last 25 years. We have learned a great deal, especially from redshift surveys, and although things turn out to be
fairly complicated in the sense that the Universe is not simple a pile of cluste... | 4 | [
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... | 11,787 | 11787 | |
Haversine Formula in C# and in SQL
The Haversine Formula class listed below is used to calculate the distance between two latitude/longitude points in either Kilometers or Miles. I’ve seen the formula written in a few other languages
but didn’t see any in C#. So, here is the Haversine Formula in C#. Before I show t... | 4 | [
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-0.... | 11,788 | 11788 | |
Elementary Surveying: An Introduction to Geomatics
Overview
Updated throughout, this highly readable best-seller presents basic concepts and practical material in each of the areas fundamental to modern surveying (geomatics) practice. Its depth and breadth
are ideal for self-study.
Includes a new Chapter 16 on Kinema... | 5 | [
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-0.0134277... | 11,789 | 11789 | |
Head start on Calculus: Differentiation, Integration
Date: 07/08/97 at 16:25:36
From: Diane Truesdale
Subject: Calculus
Dr. Math,
I'm soon to be a Calculus student in high school. Could you please
teach me some Calculus over the internet? I'm enrolled in Calculus
BC, the harder of the two Calculus classes. Could y... | 5 | [
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... | 11,790 | 11790 | |
The Erdős-Rényi Random Graph
During the 1950′s the famous mathematician Paul Erdős and Alfred Rényi put forth the concept of a random graph and in the subsequent years of study transformed the world of combinatorics. The random
graph is the perfect example of a good mathematical definition: it’s simple, has surprising... | 5 | [
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... | 11,791 | 11791 | |
How Long?
One of the most often-asked questions about climate data is, “How long a time period do we need to establish a statistically significant trend?”
Statistical significance of trends is an issue which has been dealt with often at this blog and many others. Yet previous posts, at least here, have made general ... | 4 | [
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Tukey's method
7. Product and Process Comparisons
7.4. Comparisons based on data from more than two processes
7.4.7. How can we make multiple comparisons?
Tukey's method considers all The Tukey method applies simultaneously to the set of all pairwise comparisons $$ \{ \mu_i - \mu_j \} \, . $$ The confidence coef... | 5 | [
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... | 11,793 | 11793 | |
Wolfram Blog
Check out Etienne’s updated predictions from Thursday, June 26 here.
The FIFA World Cup is underway. From June 12 to July 13, 32 national football teams play against each other to determine the FIFA world champion for the next four years. Who will succeed? Experts and
fans all have their opinions, but is ... | 4 | [
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Algorithm to select a set of numbers to reach a minimum total
up vote 5 down vote favorite
Given A set of numbers n[1], n[2], n[3], .... n[x] And a number M
I would like to find the best combination of
n[a] + n[b] + n[c] + ... + n[?] >= M
The combination should reach the minimum required to reach or go beyond M wit... | 5 | [
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0.0327... | 11,795 | 11795 | |
Thoughts On Economics
I have been unsuccessful in getting my refutation of Austrian Business Cycle Theory accepted for publication in a peer-reviewed journal. My latest publically available
version
is downloadable from SSRN. I have had a later version rejected a couple of weeks ago. This version's references include ... | 4 | [
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0.02... | 11,796 | 11796 | |
over
Covering map
In
mathematics
, specifically
topology
, a
covering map
is a
continuous surjective
map
p
:
C
→
X
, with
C
and
X
being topological spaces, which has the following property:
to every x in X there exists an open neighborhood U such that p^ -1(U) is a union of mutually disjoint ope... | 4 | [
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0.00909423828125,
-0.1... | 11,797 | 11797 | |
On the right track with this optimization problem?
September 7th 2012, 03:15 PM
Maskawisewin
On the right track with this optimization problem?
Question:
A piece of 2 m long wire is to be cut into two pieces one of which is to be formed into a circle and the other into an equilateral triangle. How should the... | 5 | [
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-0.... | 11,798 | 11798 | |
Calculating Stirling Numbers using C#
A “Stirling number of the second kind” is the number of ways to group/partition n items into k subsets. For example, the number of ways to group n=4 items into k=2 subsets is 7. Suppose the 4 items
are a, b, c, d. Then S(4,2) = 7 and the seven groupings are: (a | bcd), (b | acd), ... | 5 | [
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0.00... | 11,799 | 11799 |