## Tagged Questions

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### Sequences equdistributed modulo 1

Let $\alpha$ be any positive irrational and $\beta$ be any positive real. We have the following results. H. Weyl (1909): The fractional part of the sequence $\alpha n$ is equidist …
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### Embedded associated prime

$\underline{\textbf{Embedded associated prime}}$ I am reading the book "Joins and Intersections". In the proof of Rees theorem I have some doubt. Let $\mathbf M$ be a finitely ge …
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### What is “Schreier Graph”? [closed]

On this paper http://www.math.cornell.edu/~kbrown/6310/computation.pdf I read : This makes it easier for you to draw Schreier graphs as you read, which I encourage you to do. …
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### Composition in the category quotient

I would like to understand the accounts of P. Gabriel (http://archive.numdam.org/ARCHIVE/BSMF/BSMF_1962_90/BSMF_1962_90_323_0/BSMF_1962_90_323_0.pdf), pag 365, when he shows that t …
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### integrating sigmoid function wrt probability density function

Hi, I have a random variable V with probability density g(V) and a sigmoid, or logistic, function Y=S(V). I'd like to calculate a closed-form expression for the expected value of t …
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### Calculate the tendency of a set of samples

I develop an application in which i constantly get samples of heart pulse. I defined an interval of t seconds. In each t seconds I have n samples. In every interval, I want to c …
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### Minimum off-diagonal elements of a matrix with fixed eigenvalues

Hello, I am en engineer working in radar research. I came accross a problem I cannot seem to find math literature on it. I can ask it in two different ways. Perhaps depending on …