User Richard Stanley

15 votes

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Products and sum of cubes in Fibonacci

answered Mar 26, 2019 at 23:54

15 votes

Important formulas in combinatorics

answered Aug 28, 2015 at 13:25

15 votes

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Sums of sets in ${[n] \choose k}$

answered Feb 10, 2017 at 3:38

15 votes

How much redundancy resides in an $n \times n$ orthogonal matrix?

answered Jun 8, 2015 at 1:37

15 votes

Which popular games are the most mathematical?

answered Feb 24, 2010 at 16:48

15 votes

Math puzzles for dinner

answered Jun 25, 2010 at 19:17

15 votes

How to prove that every real number is a zero of some power series with rational coefficients (if true)

answered Oct 17, 2010 at 2:15

14 votes

Combinatorial Techniques for Counting Conjugacy Classes

answered Feb 24, 2010 at 20:36

14 votes

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Integer sequences and integer coefficients in recurrence relations.

answered Apr 14, 2011 at 0:00

14 votes

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Number of double cosets of a Young subgroup

answered Oct 1, 2014 at 0:28

14 votes

Is the matrix $\left({2m\choose 2j-i}\right)_{i,j=1}^{2m-1}$ nonsingular?

answered Dec 30, 2016 at 3:47

14 votes

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Plugging $1-x$ into Schur polynomials

answered Jan 22, 2016 at 1:00

14 votes

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The $r$-dimensional volume of the Minkowski sum of $n$ ($n\geq r$) line sets

answered Jan 2, 2020 at 3:29

14 votes

Symmetric polynomials that detect positivity

answered Feb 12, 2022 at 16:16

13 votes

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Who wins this two player game of making squares?

answered Oct 5, 2021 at 0:53

13 votes

Counting monomials in product polynomials: Part I

answered Jan 9, 2021 at 3:29

13 votes

Number of collinear ways to fill a grid

answered Apr 20, 2018 at 2:03

13 votes

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Two statistics on the permutation group

answered Nov 21, 2016 at 19:37

13 votes

Tweetable Mathematics

answered Apr 26, 2017 at 16:49

13 votes

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The space of polynomials with all real roots

answered Jun 4, 2015 at 23:47

13 votes

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Decomposing the conjugacy representation of Sym$(n)$ for small $n$

answered Jan 9, 2014 at 2:12

13 votes

Why is the right permutohedron order (aka weak order) on $S_n$ a lattice?

answered Mar 1, 2014 at 2:53

13 votes

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Upper bounds on the permanent of dense 0-1 matrix

answered May 7, 2011 at 22:15

13 votes

A question about an application of Molien's formula to find the generators and relations of an invariant ring

answered Mar 13, 2011 at 2:28

13 votes

Using Exterior Algebras in combinatorics

answered Jun 2, 2012 at 19:32

13 votes

Irreducibility for multivariate polynomial polynomial generated from sum of irreducible polynomial in one variable

answered Nov 27, 2011 at 14:40

13 votes

The factorials of -1, -2, -3, …

answered Dec 30, 2009 at 18:56

12 votes

Faithful characters of finite groups

answered Jan 2, 2010 at 17:45

12 votes

Green polynomials

answered Oct 5, 2010 at 15:47

12 votes

David Gale's subset take-away game

answered Oct 12, 2010 at 16:26

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461 Answers

Products and sum of cubes in Fibonacci

Important formulas in combinatorics

Sums of sets in ${[n] \choose k}$

How much redundancy resides in an $n \times n$ orthogonal matrix?

Which popular games are the most mathematical?

Math puzzles for dinner

How to prove that every real number is a zero of some power series with rational coefficients (if true)

Combinatorial Techniques for Counting Conjugacy Classes

Integer sequences and integer coefficients in recurrence relations.

Number of double cosets of a Young subgroup

Is the matrix $\left({2m\choose 2j-i}\right)_{i,j=1}^{2m-1}$ nonsingular?

Plugging $1-x$ into Schur polynomials

The $r$-dimensional volume of the Minkowski sum of $n$ ($n\geq r$) line sets

Symmetric polynomials that detect positivity

Who wins this two player game of making squares?

Counting monomials in product polynomials: Part I

Number of collinear ways to fill a grid

Two statistics on the permutation group

Tweetable Mathematics

The space of polynomials with all real roots

Decomposing the conjugacy representation of Sym$(n)$ for small $n$

Why is the right permutohedron order (aka weak order) on $S_n$ a lattice?

Upper bounds on the permanent of dense 0-1 matrix

A question about an application of Molien's formula to find the generators and relations of an invariant ring

Using Exterior Algebras in combinatorics

Irreducibility for multivariate polynomial polynomial generated from sum of irreducible polynomial in one variable

The factorials of -1, -2, -3, …

Faithful characters of finite groups

Green polynomials

David Gale's subset take-away game