34 citations · 194 across the 17 of their papers we have counts for
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math.CO2017★ 16 cited
Decompositions of amplituhedra
Steven N. Karp, Lauren K. Williams, Yan X Zhang
The (tree) amplituhedron A(n,k,m) is the image in the Grassmannian Gr(k,k+m) of the totally nonnegative part of Gr(k,n), under a (map induced by a) linear map which is totally posi…
math.CO2017★ 33 cited
The totally nonnegative Grassmannian is a ball
Pavel Galashin, Steven N. Karp, Thomas Lam
We prove that three spaces of importance in topological combinatorics are homeomorphic to closed balls: the totally nonnegative Grassmannian, the compactification of the space of e…