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math.GT2018
Some more amplituhedra are contractible
Pavle V. M. Blagojević, Pavel Galashin, Nevena Palić +1
The amplituhedra arise as images of the totally nonnegative Grassmannians by projections that are induced by linear maps. They were introduced in Physics by Arkani-Hamed \& Trnka (…
math.GT2013★ 7 cited
Simple game induced manifolds
Pavel Galashin, Gaiane Panina
Starting by a simple game as a combinatorial data, we build up a cell complex , whose construction resembles combinatorics of the permutohedron. The cell complex proves…