2 citations · 3 across the 2 of their papers we have counts for
2 papers
math.CO2008★ 2 cited
$\LE$-diagrams and totally positive bases inside the nonnegative Grassmannian
Suho OH
There is a cell decomposition of the nonnegative Grassmannian. For each cell, totally positive bases(TP-bases) is defined as the minimal set of Plücker variables such that all othe…
math.CO2007★ 1 cited
Bruhat order, smooth Schubert varieties, and hyperplane arrangements
Suho Oh, Alexander Postnikov, Hwanchul Yoo
The aim of this article is to link Schubert varieties in the flag manifold with hyperplane arrangements. For a permutation, we construct a certain graphical hyperplane arrangement.…