Group automorphisms inducing the identity map on cohomology
نویسندگان
چکیده
منابع مشابه
Automorphisms of Fiber Surfaces of Genus 2, Inducing the Identity in Cohomology
Let S be a complex non-singular projective surface of general type with a genus 2 fibration and χ(OS) ≥ 5. Let G ⊂ AutS be a non-trivial subgroup of automorphisms of S, inducing trivial actions on Hi(S,Q) for all i. Then |G| = 2, K2 S = 4χ(OS) and q(S) = 1. Examples of such surfaces are given.
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ژورنال
عنوان ژورنال: Journal of Pure and Applied Algebra
سال: 1987
ISSN: 0022-4049
DOI: 10.1016/0022-4049(87)90028-4