Mikhail Ostrovskii's user avatar
Mikhail Ostrovskii's user avatar
Mikhail Ostrovskii's user avatar
Mikhail Ostrovskii
  • Member for 9 years, 6 months
  • Last seen more than a week ago
31 votes
0 answers
870 views

Isometric embeddings of finite subsets of $\ell_2$ into infinite-dimensional Banach spaces

31 votes
0 answers
2k views

Do there exist infinite-dimensional Banach spaces in which every bounded linear operator attains its norm?

17 votes
0 answers
456 views

Large almost equilateral sets in finite-dimensional Banach spaces

16 votes
1 answer
860 views

Generalizing the Mazur-Ulam theorem to convex sets with empty interior in Banach spaces

12 votes
1 answer
539 views

Is $\ell_p$ $(1<p<\infty)$ finitely isometrically distortable?

11 votes
1 answer
365 views

The number of relevant scales for a finite metric space

11 votes
1 answer
368 views

Embeddings of finitely generated groups into uniformly convex Banach spaces

6 votes
0 answers
239 views

Large subspaces with small basic constants in finite-dimensional Banach spaces

6 votes
1 answer
395 views

Embedding of real trees into $\ell_1(\Gamma)$

5 votes
1 answer
231 views

On optimal dual solutions for the minimum weight perfect matching problems in the case of metric weights

4 votes
2 answers
285 views

Finitely isometrically persistent metric spaces

2 votes
0 answers
235 views

Finitely generated groups non-embeddable into $L_1(0,1)$