User Andreas Lenz

6 votes

Accepted

Mean of an Exponential Distribution whose rate parameter is also exponentially distributed

answered Mar 22, 2022 at 17:29

5 votes

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Random walk with positive drift

answered May 12, 2022 at 21:12

5 votes

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Average Shannon Entropy

answered Nov 18, 2021 at 19:29

4 votes

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Probability of majority votes being correct

answered Dec 7, 2021 at 1:05

4 votes

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I'm getting 10-15 tonnes of topsoil delivered, what size tarpaulin do I need?

answered Jan 27, 2022 at 14:12

4 votes

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If Eve can guess all strings with small probability then she can guess a particular element with high probability using Bayes' Theorem.

answered Sep 27, 2021 at 10:36

3 votes

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Cardinality of $A_n=\{ x \in \mathbb{F}_{5}^{n} : x\cdot x=0\}$

answered Sep 6, 2021 at 13:02

3 votes

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Deriving the Oversampling formula

answered Aug 10, 2023 at 18:49

2 votes

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Showing relation for $n\,\left(\dfrac{\mathrm{d}}{\mathrm{dx}}\right)^{n-1}$

answered Jun 7, 2022 at 20:11

2 votes

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Meaning of element at ith row and jth column in transition matrix

answered Dec 23, 2022 at 16:14

2 votes

Hamming distance equals hamming weight under $XOR$ closure

answered Dec 23, 2021 at 16:12

2 votes

Accepted

Do formulas of Shannon information remain valid by a conditioning operation?

answered Sep 23, 2021 at 11:22

2 votes

How to show a possion binomial random variable dominates another possion binomial random variable with a smaller probability value?

answered Nov 12, 2018 at 16:33

2 votes

Matrix whose spectral moments (traces of its powers) follow a geometric progression

answered Sep 28, 2021 at 11:46

2 votes

How to motivate construction of the adjugate of a matrix through cofactors?

answered Oct 1, 2021 at 8:04

2 votes

Prove that a projection matrix for a subspace is the basis matrix of the subspace times its transpose.

answered Sep 26, 2021 at 21:44

2 votes

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Multiplication of two random matrices over a finite field

answered May 24, 2022 at 17:33

2 votes

What is the function of a curve like a "」"?

answered Jan 11, 2022 at 21:56

2 votes

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Minimum distance of a linear code and its relation with a control matrix of the code

answered Nov 22, 2021 at 14:36

1 vote

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$G=(I_{k}|A)$ is a generator matrix of $\mathcal{C}$ iff $H=(-A^{T}|I_{n-k})$ is a control matrix of $\mathcal{C}$

answered Nov 22, 2021 at 15:10

1 vote

Accepted

Shortest path with jumps (dynamic Bayesian network)?

answered Nov 29, 2021 at 12:41

1 vote

Estimating the mean of a normal distribution using hard thresholding

answered Jan 25, 2022 at 12:45

1 vote

Accepted

A die is rolled once. Call the result N. Then, the die is rolled N times, and those rolls which are equal to or greater than N are summed

answered Dec 23, 2021 at 15:48

1 vote

How to reduce SUBSET-SUM with integers to SUBSET-SUM with non-negative integers?

answered Dec 24, 2021 at 9:09

1 vote

Accepted

For which $\alpha$ does this system of equations spiral towards the orgin?

answered May 26, 2022 at 10:29

1 vote

If $X$ and $Y$ are independent, is it true that $\mathbb P (X+Y>x | X+Y>0) \geq \mathbb P (Y>x | Y>0)$ for every $x>0$?

answered May 25, 2022 at 16:46

1 vote

Accepted

Distributivity of XOR over boolean matrices multiplication-Decrypt AES

answered Feb 3, 2022 at 18:17

1 vote

Accepted

Upper bound on the integral of a step function inequality

answered Apr 15, 2022 at 9:42

1 vote

Balls into bins with left and right bins always empty

answered Oct 8, 2021 at 7:33

1 vote

Index of imprimitivity = Period of a matrix?

answered Oct 17, 2021 at 17:11

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47 Answers

Mean of an Exponential Distribution whose rate parameter is also exponentially distributed

Random walk with positive drift

Average Shannon Entropy

Probability of majority votes being correct

I'm getting 10-15 tonnes of topsoil delivered, what size tarpaulin do I need?

If Eve can guess all strings with small probability then she can guess a particular element with high probability using Bayes' Theorem.

Cardinality of $A_n=\{ x \in \mathbb{F}_{5}^{n} : x\cdot x=0\}$

Deriving the Oversampling formula

Showing relation for $n\,\left(\dfrac{\mathrm{d}}{\mathrm{dx}}\right)^{n-1}$

Meaning of element at ith row and jth column in transition matrix

Hamming distance equals hamming weight under $XOR$ closure

Do formulas of Shannon information remain valid by a conditioning operation?

How to show a possion binomial random variable dominates another possion binomial random variable with a smaller probability value?

Matrix whose spectral moments (traces of its powers) follow a geometric progression

How to motivate construction of the adjugate of a matrix through cofactors?

Prove that a projection matrix for a subspace is the basis matrix of the subspace times its transpose.

Multiplication of two random matrices over a finite field

What is the function of a curve like a "」"?

Minimum distance of a linear code and its relation with a control matrix of the code

$G=(I_{k}|A)$ is a generator matrix of $\mathcal{C}$ iff $H=(-A^{T}|I_{n-k})$ is a control matrix of $\mathcal{C}$

Shortest path with jumps (dynamic Bayesian network)?

Estimating the mean of a normal distribution using hard thresholding

A die is rolled once. Call the result N. Then, the die is rolled N times, and those rolls which are equal to or greater than N are summed

How to reduce SUBSET-SUM with integers to SUBSET-SUM with non-negative integers?

For which $\alpha$ does this system of equations spiral towards the orgin?

If $X$ and $Y$ are independent, is it true that $\mathbb P (X+Y>x | X+Y>0) \geq \mathbb P (Y>x | Y>0)$ for every $x>0$?

Distributivity of XOR over boolean matrices multiplication-Decrypt AES

Upper bound on the integral of a step function inequality

Balls into bins with left and right bins always empty

Index of imprimitivity = Period of a matrix?