User Tom Chen

5 votes

1 answer

494 views

A ridiculously fast way to find fixed points of the logistic function?

asked Sep 11, 2019 at 15:15

4 votes

1 answer

3k views

Conditional distribution of subvector of a Dirichlet random variable

probability-distributions

asked Oct 20, 2016 at 0:50

3 votes

1 answer

146 views

Vandermonde-type convolution with geometric term

combinatorics binomial-coefficients generating-functions

asked May 20, 2016 at 17:16

3 votes

0 answers

83 views

Redux: An interesting four sum inequality (feat. probability)

probability inequality contest-math supremum-and-infimum

asked Aug 13, 2019 at 16:27

3 votes

0 answers

20 views

Correlation between correlations

probability asymptotics statistical-inference central-limit-theorem

asked Apr 5 at 18:14

2 votes

0 answers

141 views

Probability that Brownian motion falls between two piecewise constant functions

probability stochastic-processes brownian-motion confidence-interval

asked May 11, 2016 at 20:08

2 votes

2 answers

85 views

An interesting stopping time problem using PGF's

probability number-theory generating-functions stopping-times

asked Feb 13, 2021 at 6:58

2 votes

0 answers

78 views

Sums of Cauchy distributions and their conditional distribution

probability density-function characteristic-functions

asked May 1, 2020 at 5:32

2 votes

0 answers

41 views

Inequality between linear combinations of rank-one matrices?

inequality permutations matrix-decomposition majorization

asked Aug 27, 2020 at 3:12

2 votes

1 answer

185 views

Maximizing a permutation of a quadratic form

inequality optimization quadratic-forms integer-programming rearrangement-inequality

asked Aug 15, 2019 at 18:51

2 votes

1 answer

200 views

Woodbury's formula with block-diagonal matrix

linear-algebra matrices inverse

asked Nov 4, 2018 at 6:43

2 votes

0 answers

140 views

Supremum of a general Gaussian Process

stochastic-processes stochastic-calculus brownian-motion

asked Nov 12, 2018 at 2:32

2 votes

0 answers

58 views

Higher moments of linear regression residuals?

linear-algebra statistics tensor-products projection-matrices

asked Jan 28, 2019 at 16:43

2 votes

0 answers

69 views

A "divide-and-conquer" iterative procedure for minimizing a sum of convex functions

optimization convex-optimization numerical-optimization newton-raphson

asked May 16, 2019 at 1:19

1 vote

1 answer

28 views

A type of sequence inversion?

sequences-and-series inverse lagrange-inversion

asked Mar 30, 2020 at 22:44

1 vote

1 answer

105 views

Proving $(n+1)c^{1/(n+1)} - nc^{1/n} \le 1$ from first principles

sequences-and-series inequality

asked May 20, 2015 at 2:22

1 vote

1 answer

109 views

A binomial symmetric sum

probability expectation binomial-distribution symmetric-polynomials

asked Apr 4, 2016 at 15:11

1 vote

1 answer

213 views

Maximizing the p-value associated with a goodness-of-fit test

probability statistics optimization hypothesis-testing

asked Oct 27, 2016 at 18:46

1 vote

0 answers

246 views

Inversion of so-called probability-generating functional

probability sequences-and-series power-series poisson-process lagrange-inversion

asked Feb 14, 2017 at 9:16

1 vote

0 answers

38 views

Approximating (or better yet, solving) a functional equation

functional-equations regression interpolation approximation-theory

asked Feb 16, 2017 at 3:13

1 vote

0 answers

48 views

Maximum likelihood of a non-injective transformation

probability optimization numerical-optimization maximum-likelihood

asked Apr 24, 2017 at 15:19

1 vote

0 answers

31 views

Distribution of outer product of two uniform r.v.'s on ellipsoid

probability normal-distribution outer-product

asked Jan 25, 2018 at 4:30

1 vote

0 answers

34 views

Another matrix property question: eigenvalues of a matrix

matrices eigenvalues-eigenvectors approximation

asked Sep 8, 2020 at 3:36

1 vote

1 answer

52 views

Maximum value of a parameter in a cyclic inequality?

inequality rearrangement-inequality

asked Jun 12, 2020 at 13:15

0 votes

1 answer

37 views

Can the sum of two non-degenerative random variables ever be uniform?

probability-theory convolution uniform-distribution

asked Feb 1, 2021 at 4:29

0 votes

0 answers

70 views

Optimization of sum of squares over permutations

optimization permutations sums-of-squares rearrangement-inequality

asked Aug 8, 2018 at 15:55

0 votes

1 answer

119 views

A binomial sum identity

probability combinatorics summation binomial-coefficients

asked May 26, 2016 at 6:23

0 votes

0 answers

56 views

Solving for $f_2(x, y)$ in $\int_{\mathbb{R}}f_1(x, y) f_2(x, y) dx = g(y)$

probability integration inverse functional-equations

asked Jul 14, 2016 at 3:06

0 votes

1 answer

78 views

Further terms of Taylor expansion for improved inequalities?

algebra-precalculus inequality recreational-mathematics a.m.-g.m.-inequality

asked Dec 25, 2018 at 8:08

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29 Questions

A ridiculously fast way to find fixed points of the logistic function?

Conditional distribution of subvector of a Dirichlet random variable

Vandermonde-type convolution with geometric term

Redux: An interesting four sum inequality (feat. probability)

Correlation between correlations

Probability that Brownian motion falls between two piecewise constant functions

An interesting stopping time problem using PGF's

Sums of Cauchy distributions and their conditional distribution

Inequality between linear combinations of rank-one matrices?

Maximizing a permutation of a quadratic form

Woodbury's formula with block-diagonal matrix

Supremum of a general Gaussian Process

Higher moments of linear regression residuals?

A "divide-and-conquer" iterative procedure for minimizing a sum of convex functions

A type of sequence inversion?

Proving $(n+1)c^{1/(n+1)} - nc^{1/n} \le 1$ from first principles

A binomial symmetric sum

Maximizing the p-value associated with a goodness-of-fit test

Inversion of so-called probability-generating functional

Approximating (or better yet, solving) a functional equation

Maximum likelihood of a non-injective transformation

Distribution of outer product of two uniform r.v.'s on ellipsoid

Another matrix property question: eigenvalues of a matrix

Maximum value of a parameter in a cyclic inequality?

Can the sum of two non-degenerative random variables ever be uniform?

Optimization of sum of squares over permutations

A binomial sum identity

Solving for $f_2(x, y)$ in $\int_{\mathbb{R}}f_1(x, y) f_2(x, y) dx = g(y)$

Further terms of Taylor expansion for improved inequalities?