A. Vainshtein

activity

19982003

most citedCluster algebras and Weil-Petersson forms

5 citations · 7 across the 4 of their papers we have counts for

collaborators

Showing 2001Show all

2 papers · 1 filter

math.AG2001

The number of connected components in the double Bruhat cells for nonsimply-laced groups

Michael Gekhtman, Michael Shapiro, Alek Vainshtein

We compute the number of connected components in a generic real double Bruhat cell for series $B_{n}$ and $C_{n}$ and an exceptional group $F_{4}$ .

math.CO2001

Counting occurences of 132 in a permutation

Toufik Mansour, Alek Vainshtein

We study the generating function for the number of permutations on n letters containing exactly $r\gs0$ occurences of 132. It is shown that finding this function for a given r amou…