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Top Questions

On the polynomial $\sum_{k=0}^n\binom{n}{k}(-1)^kX^{k(n-k)}$

polynomials factorization combinatorial-identities hilbert-function asked Mar 28 '18 at 23:32

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Average size of extreme points of convex hull of $N$ points

pr.probability convex-geometry asked Jun 20 '17 at 13:11

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How many people are there?

logical-deduction game asked Oct 6 at 0:15

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When is the local representation associated to an elliptic curve a Steinberg?

nt.number-theory rt.representation-theory elliptic-curves automorphic-forms asked Feb 16 '17 at 13:50

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Is an integral sum of periodic vectors always a sum of integral periodic vectors?

nt.number-theory rt.representation-theory linear-algebra cyclotomic-fields asked Sep 19 at 23:37

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Top Answers

Which person is telling the truth?

puzzling.stackexchange.com

The $2\pi$ in the definition of the Fourier transform

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Inverse of special upper triangular matrix

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Is it true that $\sum_{k=m}^n\frac{\sigma(k)}k\not\in\mathbb Z$ for all derangements $\sigma\in S_n$ and $1\le m\le n$?

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If $x_{n+1}= \frac{nx_{n}^2+1}{n+1}$ then $x_{n}=1$

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Partition of [3n] into summoids

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Analysing Space Complexity

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From expensive search to Integer Programming or Constraint Programming?

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$\prod_{i=0}^{n-1}(2^n-2^i)$ can be divided by $n!$

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Solution to simple mathematical game

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How would you transpose a binary matrix?

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Find integer N which, added to its (decimal) reverse, equals M

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Any interesting properties of the matrix $M:=(m_{ij})$ with $m_{ij}=min(i,j)$?

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There at least 4 divisors of $n-1$ which do not divide $\phi(n)$ if $n$ is a composite of the form $6k+1$

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How can you find a divisor of the numerator of 1-1/2+1/3-1/4-…+1/47

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