Finite rigid sets in flip graphs

Shinkle, Emily

doi:10.1090/tran/8407

Finite rigid sets in flip graphs
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Trans. Amer. Math. Soc. 375 (2022), 847-872 Request permission

Abstract:

We show that for most pairs of surfaces, there exists a finite subgraph of the flip graph of the first surface so that any injective homomorphism of this finite subgraph into the flip graph of the second surface can be extended uniquely to an injective homomorphism between the two flip graphs. Combined with a result of Aramayona-Koberda-Parlier, this implies that any such injective homomorphism of this finite set is induced by an embedding of the surfaces.

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