34 citations · 194 across the 17 of their papers we have counts for
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math.CO2018★ 12 cited
Moment curves and cyclic symmetry for positive Grassmannians
Steven N. Karp
We show that for each k and n, the cyclic shift map on the complex Grassmannian Gr(k,n) has exactly fixed points. There is a unique totally nonnegative fixed point,…
math.RT2018★ 16 cited
The totally nonnegative part of G/P is a ball
Pavel Galashin, Steven N. Karp, Thomas Lam
We show that the totally nonnegative part of a partial flag variety (in the sense of Lusztig) is homeomorphic to a closed ball.