Mixed Hodge structures and equivariant sheaves on the projective plane

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2 Citations (Scopus)


We describe an equivalence of categories between the category of mixed Hodge structures and a category of equivariant vector bundles on a toric model of the complex projective plane which verify some semistability condition. We then apply this correspondence to define an invariant which generalizes the notion of R-split mixed Hodge structure and give calculations for the first group of cohomology of possibly non smooth or non-complete curves of genus 0 and 1. Finally, we describe some extension groups of mixed Hodge structures in terms of equivariant extensions of coherent sheaves.
Original languageEnglish
Pages (from-to) 526-542
Number of pages17
JournalMathematische Nachrichten
Issue number4
Publication statusPublished - Mar 2011


  • Algebraic geometry
  • Hodge theory
  • Mixed Hodge structures
  • Equivariant sheaves
  • Toric varieties


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