Characterizing projective spaces on deformations of Hilbert schemes of K3 surfaces

David Harvey, Brendan Hassett, Yuri Tschinkel

Research output: Contribution to journalArticlepeer-review


We seek to characterize homology classes of Lagrangian projective spaces embedded in irreducible holomorphic-symplectic manifolds, up to the action of the monodromy group. This paper addresses the case of manifolds deformation-equivalent to the Hilbert scheme of length-3 subschemes of a K3 surface. The class of the projective space in the cohomology ring has prescribed intersection properties, which translate into Diophantine equations. Possible homology classes correspond to integral points on an explicit elliptic curve; our proof entails showing that the only such point is two-torsion.

Original languageEnglish (US)
Pages (from-to)264-286
Number of pages23
JournalCommunications on Pure and Applied Mathematics
Issue number2
StatePublished - Feb 2012

ASJC Scopus subject areas

  • General Mathematics
  • Applied Mathematics


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