K3 surfaces with non-symplectic automorphisms of prime order

Details K3 surfaces with non-symplectic automorphisms of prime order K3 surfaces with non-symplectic automorphisms of prime order

2009-03-20

arxiv.org/abs/0903.3481v2

Mathematics

Algebraic Geometry

28 pages; With an appendix by Shigeyuki Kondo. We add Smith exact sequences in the study of the fixed locus. To appear in Math

Scientific paper

In this note we present the classification of non-symplectic automorphisms of prime order on K3 surfaces, i.e.we describe the topological structure of their fixed locus and determine the invariant lattice in cohomology. We provide new results for automorphisms of order 5 and 7 and alternative proofs for higher orders. Moreover, for any prime p, we identify the irreducible components of the moduli space of K3 surfaces with a non-symplectic automorphism of order p.

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