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Hodge symmetry and Lefschetz theorems for singular varieties

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arxiv 2410.15638 v3 pith:6VHMKFU4 submitted 2024-10-21 math.AG

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keywords varietieshodgerationalsingularsingularitiestheoryboischaracterize
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We prove new results concerning the topology and Hodge theory of singular varieties. A common theme is that concrete conditions on the complexity of the singularities, from a number of different perspectives, are closely related to the symmetries of the Hodge-Du Bois diamond. We relate this to the theory of rational homology manifolds, and characterize these among low-dimensional varieties with rational singularities.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Negative $K$-theory and Hodge theory

    math.AG 2026-07 unverdicted novelty 7.0 of 10

    Negative K-groups of complex varieties are analyzed via mixed Hodge theory, higher singularities, Chow groups, and the Minimal Model Program.

  2. Lefschetz morphisms on singular cohomology and local cohomological dimension of toric varieties

    math.AG 2025-06 conditional novelty 7.0 of 10

    The local cohomological defect of an affine toric variety is characterized by Lefschetz cup-product maps on a projective toric variety of one dimension lower, which shows it is not a combinatorial invariant and allows...

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