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Generators for the cohomology of the moduli space of irregular parabolic Higgs bundles

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arxiv 2402.05380 v2 pith:KB6H5FFG submitted 2024-02-08 math.AG

classification math.AG
keywords parabolicbundlescohomologyhiggsmodulichernclassesirregular
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abstract

We prove that the pure part of the cohomology ring of the moduli space of irregular $\underline{\xi}$-parabolic Higgs bundles is generated by the K\"{u}nneth components of the Chern classes of a universal bundle and the Chern classes of the successive quotients of a universal flag of subbundles. As an application, in the regular full-flag case, we demonstrate a similar result for the cohomology ring of the moduli spaces of parabolic and strongly parabolic Higgs bundles.

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  1. Relative spectral correspondence for parabolic Higgs bundles and Deligne--Simpson problem

    math.AG 2025-09 conditional novelty 7.0 of 10

    The authors prove that, under a multiplicative genericity assumption, the OK condition on conjugacy classes suffices for solvability of the Deligne-Simpson problem, via a new relative spectral correspondence for parab...

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