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Orthogonal bundles, theta characteristics and the symplectic strange duality

2008/08/06 by Prakash Belkale, Belkale, Prakash
Mathematics · #14H60 #14H70 #Advanced Algebra and Geometry #Algebraic Geometry (math.AG) #Algebraic Geometry and Number Theory #FOS: Mathematics #Homotopy and Cohomology in Algebraic Topology #Representation Theory (math.RT) #math.AG #math.RT #msc:14H60 #msc:14H70

paper · pdf · doi:10.48550/arxiv.0808.0863

Some references were added, and some minor changes were made

openalex publication_date 2008/08/06 · arxiv created 2008/08/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A basis for the space of generalized theta functions of level one for the spin groups, parameterized by the theta characteristics (the even theta characteristcs for the odd spin groups) on a curve, is shown to be projectively flat over the moduli space of curves (for Hitchin's connection). The symplectic strange duality conjecture, conjectured by Beauville is shown to hold for all curves of genus at least two, by using Abe's proof of the conjecture for generic curves, and the above monodromy result.

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