An effective decomposition theorem for Schubert varieties

DOI10.1016/j.jsc.2023.102238arXiv2203.10913OpenAlexW4382395841WikidataQ123141990 ScholiaQ123141990MaRDI QIDQ6051112

Francesca Cioffi, Carmine Sessa, Davide Franco

Publication date: 19 September 2023

Published in: Journal of Symbolic Computation (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/2203.10913

zbMATH Keywords

resolution of singularitiesGrassmanniansSchubert varietiesintersection cohomologyderived categorylocal systemsKazhdan-Lusztig polynomialsdecomposition theoremperverse sheavesLeray-Hirsch theorem

Mathematics Subject Classification ID

Symbolic computation and algebraic computation (68W30) Singularities in algebraic geometry (14B05) Grassmannians, Schubert varieties, flag manifolds (14M15) Global theory and resolution of singularities (algebro-geometric aspects) (14E15) Stratifications; constructible sheaves; intersection cohomology (complex-analytic aspects) (32S60) Topological properties of mappings on manifolds (58K15) Topological properties in algebraic geometry (14F45)

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