104 citations · 123 across the 18 of their papers we have counts for
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math.CO2017
The rank function of a positroid and non-crossing partitions
Robert Mcalmon, SuHo Oh
A positroid is a special case of a realizable matroid, that arose from the study of totally nonnegative part of the Grassmannian by Postnikov. Postnikov demonstrated that positroid…
math.CO2017
A Combinatorial Problem from Group Theory
Eugene Curtin, Suho Oh
Keller proposed a combinatorial conjecture on construction of an n-by-infinite matrix, which comes from showing the existence of many orbits of different sizes in certain linear gr…
math.CO2017
The facets of the matroid polytope and the independent set polytope of a positroid
Suho Oh, David Xiang
A positroid is a special case of a realizable matroid that arose from the study of the totally nonnegative part of the Grassmannian by Postnikov. In this paper, we study the facets…