Equivariant spaces of matrices of constant rank

2022/12/08 by J. M. Landsberg, Landsberg, J. M., Laurent Manivel +1
Mathematics · #Advanced Topics in Algebra #Algebraic Geometry (math.AG) #FOS: Mathematics #Finite Group Theory Research #Homotopy and Cohomology in Algebraic Topology

paper · pdf · doi:10.48550/arxiv.2212.04228

openalex publication_date 2022/12/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We use representation theory to construct spaces of matrices of constant rank. These spaces are parametrized by the natural representation of the general linear group or the symplectic group. We present variants of this idea, with more complicated representations, and others with the orthogonal group. Our spaces of matrices correspond to vector bundles which are homogeneous but sometimes admit deformations to non-homogeneous vector bundles, showing that these spaces of matrices sometimes admit large families of deformations.

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