Alin Galatan's user avatar
Alin Galatan's user avatar
Alin Galatan's user avatar
Alin Galatan
  • Member for 10 years, 6 months
  • Last seen more than 2 years ago
13 votes
2 answers
750 views

How hard (P, NP, NP-hard) is it to compute Schur norms of matrices (as multipliers)?

12 votes
3 answers
1k views

Dimensions and number of complex irreducible representations for SL3(Z/pZ)

6 votes
0 answers
483 views

Faithful and weakly-mixing representations of Property (T) groups in relation to left regular rep

5 votes
0 answers
312 views

Unitary representations of Tarski Monsters and other beasts

4 votes
0 answers
175 views

Is the Tensor/Exterior square $G\otimes G$ or $G\wedge G$ of infinite p-group also a p-group?

4 votes
0 answers
172 views

Example of "exotic" verbal subgroups of free groups

3 votes
1 answer
487 views

Is there a link between $H_2(G,\mathbb{Z})$, the Schur Multiplier of a group, and the "other" Schur multipliers of a group?

3 votes
1 answer
165 views

Sets $E$ in $\mathbb{Z}$ such that any $l^2$ function with support on $E$ comes from Fourier of a continuous function

1 vote
2 answers
329 views

Characterisation of compact operators

1 vote
0 answers
128 views

Differentiability of $f*g$ on the circle, for integrable f, bounded g, and some decay of the Fourier coefficients of f

0 votes
1 answer
128 views

Extending affine maps defined on weakly closed sets to the whole topological space