{ "id": "2403.09959", "version": "v1", "published": "2024-03-15T01:50:09.000Z", "updated": "2024-03-15T01:50:09.000Z", "title": "Poset polytopes and pipe dreams: toric degenerations and beyond", "authors": [ "Ievgen Makedonskyi", "Igor Makhlin" ], "comment": "Extended abstract for FPSAC 2024", "categories": [ "math.AG", "math.CO", "math.RT" ], "abstract": "We demonstrate how pipe dreams can be applied to the theory of poset polytopes to produce toric degenerations of flag varieties. Specifically, we present such constructions for marked chain-order polytopes of Dynkin types A and C. These toric degenerations also give rise to further algebraic and geometric objects such as PBW-monomial bases and Newton--Okounkov bodies. We discuss a construction of the former in the type A case and of the latter in type C.", "revisions": [ { "version": "v1", "updated": "2024-03-15T01:50:09.000Z" } ], "analyses": { "keywords": [ "poset polytopes", "pipe dreams", "produce toric degenerations", "newton-okounkov bodies", "marked chain-order polytopes" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }