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Set Theory, Logic, Probability, Statistics

- Fundamentals: Set theory, logic and proofs. Probability and statistics
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Jan16-12 Greg Bernhardt
Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:25 AM
micromass
1 32,450
Hi, I'm an economics graduate student doing some work on a nested logit model. I am trying to generate random...
Jul22-13 07:52 AM
Jeffack
4 474
My goal: To show the dimension of space L equals the length of any maximal flag of L; Is the following valid? My...
Jul21-13 09:09 PM
CubicFlunky77
3 570
Hi everyone, I hope your summer is going well. My name is Quinn and I am currently a junior CS and math major at...
Jul21-13 02:02 AM
JCVD
5 623
Hello. Say I have a given noise spectral density and I want to plot the random noise signal arising from this spectral...
Jul20-13 08:00 AM
jasonRF
4 548
I am currently working on a prediction problem using generalized linear model, My goal is to get the prediction...
Jul20-13 02:27 AM
chiro
5 957
If X is a continuous random variable and E(X) exists, does the limit as x→∞ of x = 0? I encountered this, but so...
Jul17-13 04:39 PM
LoadedAnvils
5 479
Never mind.
Jul16-13 06:54 AM
Normalization
0 481
I've been trying to prove the following, without much success. Let ##B## and ##C## be nonempty finite subsets of an...
Jul15-13 02:07 PM
D H
7 646
Hello, I have just started learning these things, would really appreciate any help on this. There are 4 nodes in a...
Jul15-13 12:07 PM
verty
1 453
Good evening Im starting to learn quantum mechanics from Griffith's book however Im having problems when dealing...
Jul15-13 02:10 AM
Jimmy84
11 760
Link to theorem: http://en.wikipedia.org/wiki/Law_of_the_unconscious_statistician Suppose Y is a discrete random...
Jul13-13 05:06 PM
LoadedAnvils
7 1,280
Hi everyone, I've been bumping on this problem for a while and wondered if any of you had any clue on how to...
Jul13-13 09:42 AM
verty
14 1,644
Hi, I have the following problem. Consider an age-structured population growing according to a Leslie matrix....
Jul12-13 09:07 AM
Stephen Tashi
1 458
I should preface this question by saying that I am a computer science major. A logic question was posed in an IT...
Jul12-13 09:02 AM
Stephen Tashi
6 718
Essentially, I have to show that where {e_1,...,e_n} forms the basis of L, no family of vectors {e'_1 ,..., e'_m} with...
Jul12-13 08:58 AM
Stephen Tashi
2 415
This is the first 'problem' in my Linear Algebra/Geometry text book. I just need to know if I am doing it correctly....
Jul11-13 06:34 PM
CubicFlunky77
2 464
Does anyone know of any REALLY good derivations of the grand canonical partition function(T,V,μ) from the hamiltonian....
Jul11-13 05:16 PM
rppearso
0 437
Hello, I have a doubt about the distribution of random variables that maximize the differential entropy in a set of...
Jul11-13 12:32 PM
ferreat
2 524
Please take a look at this proof: http://s12.postimg.org/qa24fgbq5/proof.jpg The thing I do not get is how they...
Jul10-13 02:43 PM
verty
5 780
"All engineers have practical skills or are good at mathematics" to write down the converse, inverse and...
Jul10-13 03:17 AM
micromass
3 674
Consider these propositions, P=It is raining, and Q=There are clouds in the sky R=giving a cookie by me, and...
Jul10-13 01:00 AM
Stephen Tashi
1 524
I have a question on (I think?) Bayesian statistics. Consider the following situation: -P is a class of...
Jul9-13 01:27 PM
economicsnerd
8 783
Hey all, so my university's game theory course never runs due to lack of students signing up for it, so I'm taking it...
Jul9-13 12:08 PM
economicsnerd
1 593
you can list and match up all rational numbers with irrational numbers this way.. lets say i have an irrational...
Jul9-13 03:34 AM
micromass
17 2,216
I read in Mirman's book on group theory that SO(2) is the only simple group that is not semisimple. Can anyone explain...
Jul7-13 11:23 PM
Stephen Tashi
1 474
Hi all. I've been thinking about this question a lot for the past few days and it seems to me that I'm committing a...
Jul7-13 08:24 PM
Stephen Tashi
24 1,800
I don't understand it. A has n elements, and B has m elements. Give the exact maximum/minimum of 1) A \bigcup B...
Jul7-13 08:19 AM
HallsofIvy
5 693
I have a one-dimensional set of data which I have attached an image of. This data is an intensity z, as a function of...
Jul6-13 06:59 AM
chiro
6 605
Need help propagating the uncertainty of Es = Ex (x+xo/xs+xo) . I understand all of the rules and can do it for a...
Jul5-13 08:53 PM
chiro
4 471
I am confused I understand that the power set has ##2^{|\mathcal{A}|}## members, but they write it as...
Jul5-13 06:08 AM
Tenshou
8 868
Does anyone know where to get the letters(English translation) between Cantor and Dedekind during the development of...
Jul4-13 02:20 PM
lugita15
2 582
Hello, I have some questions about the truth tables for impliocation and equivalence. for implication we have: p...
Jul3-13 04:49 PM
MLP
4 726
Hi Please advice me a good book on mathematical statistics.I want it to be oriented in math students or engineering...
Jul2-13 07:43 PM
theoristo
1 678
Hi guys, It's been 20 years since I left college so I have forgotten how to calculate probability. It is...
Jul2-13 11:42 AM
Logger
12 894
I have the following silly problem I don't know how to get round:cry: I have a set of datapoints, each point has...
Jul2-13 09:59 AM
f95toli
1 391
Hi, I'm having trouble understanding why the follow composition table for the set \left\{ a, b, c, d \right\} with...
Jul1-13 05:43 PM
coderot
5 513
I don't know if this is the proper thing to call it, but I haven't used any mathematical terminology in a while so I...
Jul1-13 04:07 AM
Tenshou
11 731
Just finished my math studies. I have been studying mostly statistics and have some experience in R language. Need...
Jun29-13 08:04 PM
MarneMath
1 596
I know that f(A∩B) is not equal to f(A) ∩ f(B) but i don't know that where am i wrong in the following proof....:( can...
Jun29-13 05:49 PM
woundedtiger4
2 512
So I've been banging my head on this problem for a few days and haven't gotten very far, hoping someone has some...
Jun29-13 11:07 AM
mfb
1 505

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