Embedding pointed curves in K3 surfaces

Brendan Hassett, Yuri Tschinkel

Research output: Contribution to journalArticle

Abstract

We analyze morphisms from pointed curves to K3 surfaces with a distinguished rational curve, such that the marked points are taken to the rational curve, perhaps with specified cross ratios. This builds on work of Mukai and others characterizing embeddings of curves into K3 surfaces via non-abelian Brill–Noether theory. Our study leads naturally to enumerative problems, which we solve in several specific cases. These have applications to the existence of sections of del Pezzo fibrations with prescribed invariants.

Original languageEnglish (US)
Pages (from-to)927-953
Number of pages27
JournalMathematische Zeitschrift
Volume278
Issue number3-4
DOIs
StatePublished - Nov 12 2014

Keywords

  • Brill–Noether theory
  • K3 surfaces

ASJC Scopus subject areas

  • Mathematics(all)

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