Numerically trivial involutions of Kummer type of an Enriques surface
نویسندگان
چکیده
منابع مشابه
Numerically Trivial Involutions of Kummer Type of an Enriques Surface
There are two types of numerically trivial involutions of an Enriques surface according as their period lattice. One is U(2) ⊥ U(2)-type and the other is U ⊥ U(2)-type. An Enriques surface with an involution of U(2) ⊥ U(2)-type is doubly covered by a Kummer surface of product type, and such involutions are classified again into two types according as the parity of the corresponding Göpel subgro...
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A (holomorphic) automorphism of an Enriques surface S is said to be numerically reflective if it acts on the cohomology group H(S,Q) by reflection. We shall show that there are two lattice-types of numerically reflective involutions, and describe one type geometrically in terms of curves of genus 2 and Göpel subgroups of their Jacobians. An automorphism of an Enriques surface S is numerically t...
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ژورنال
عنوان ژورنال: Kyoto Journal of Mathematics
سال: 2010
ISSN: 2156-2261
DOI: 10.1215/0023608x-2010-017