POSITIVE GRASSMANNIAN AND POLYHEDRAL SUBDIVISIONS

DOI10.1142/9789813272880_0177zbMath1448.05219arXiv1806.05307OpenAlexW2973074523MaRDI QIDQ5122152

Alexander Postnikov

Publication date: 22 September 2020

Published in: Proceedings of the International Congress of Mathematicians (ICM 2018) (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/1806.05307

zbMATH Keywords

scattering amplitudestriangulationsmatroidstotal positivitymembranespolyhedral subdivisionsflipscluster algebrasplabic graphspositive Grassmannianhypersimplexassociahedroncyclic shiftsamplituhedronfiber polytopesgeneralized Baues problemBaues posetweakly separated collectionszonotopal tilingspositroidsGrassmannian graphs

Mathematics Subject Classification ID

Combinatorial properties of polytopes and polyhedra (number of faces, shortest paths, etc.) (52B05) Grassmannians, Schubert varieties, flag manifolds (14M15) Cluster algebras (13F60) Combinatorial aspects of algebraic geometry (05E14)

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