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0 answers
22 views

Density of numbers with a large prime factor in specified arithmetic progression

0 votes
1 answer
141 views

Prime index subgroups of $\langle Q^{i}(\mathbb Z^{2}) \mid i \in \mathbb Z \rangle$ that is invariant under matrix $Q$

4 votes
1 answer
94 views

"Universal" abelian p-groups

33 votes
5 answers
3k views

Is every (finite-dimensional, complex) representation of a finite group defined over the algebraic integers?

1 vote
2 answers
305 views

Analysing/studying simple groups with Sylow-$2$ subgroups

2 votes
0 answers
134 views

Abelian-by-cyclic groups whose fixed points of the defining automorphisms grows exponentially

2 votes
0 answers
88 views

Test words in free profinite groups

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1 answer
143 views

How to determine if a set is a sumset

2 votes
0 answers
82 views

What are the finite-dimensional irreducible unitary representations of $E(3)$?

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1 answer
168 views

A system of linear equations with way too many unknowns — constructing a bivariate distribution from marginals and "the diagonal"

12 votes
2 answers
586 views

Group with a translation invariant ultrafilter

4 votes
1 answer
545 views

Commutativity of the wreath product

2 votes
0 answers
119 views

How good is approximation of distance function on the Cayley graph by "Fourier" basis coming from the irreducible representations?

7 votes
1 answer
986 views

An unpublished calculation of Gauss and the icosahedral group

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