Mikael de la Salle's user avatar
Mikael de la Salle's user avatar
Mikael de la Salle's user avatar
Mikael de la Salle
  • Member for 13 years, 6 months
  • Last seen this week
21 votes
4 answers
2k views

Are almost commuting hermitian matrices close to commuting matrices (in the 2-norm)?

15 votes
2 answers
4k views

Comparison of the norm of a matrix and its entry-wise absolute value.

10 votes
1 answer
2k views

Unitary representations of the ax+b group: an accessible presentation

8 votes
1 answer
668 views

Lifting of a ucp map with values in a von Neumann algebra ultraproduct of matrix algebras

8 votes
3 answers
961 views

Dual Banach space of $B(X,Y)$ when $X$ is finite dimensional

6 votes
2 answers
706 views

Measuring how far from being cocompact a lattice is

5 votes
2 answers
554 views

Banach-Mazur distance to complex $\ell^1$ of a space containing real $\ell^1$

5 votes
1 answer
457 views

Probability measure on the boolean cube with small support and small Fourier transform

4 votes
1 answer
699 views

Are there explicit formulas for spherical functions on oriented real grassmannians?