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math.CO2024
Acyclic matchings on Bruhat intervals and applications to total positivity
Huanchen Bao, Xuhua He
The existence of acyclic complete matchings on the face poset of a regular CW complex implies that the underlying topological space of the CW complex is contractible by discrete Mo…
math.CO2019★ 2 cited
The m=2 amplituhedron
Huanchen Bao, Xuhua He
The (tree) amplituhedron is introduced by Arkani-Hamed and Trnka in 2013 in the study of supersymmetric Yang-Mills theory. It is defined in…