We prove a big monodromy result for a smooth family of complex algebraic surfaces of general type, with invariants p(g) = q = 1 and K-2 = 3, that has been introduced by Catanese and Ciliberto. This is accomplished via a careful study of degenerations. As corollaries, when a surface in this family is defined over a finitely generated extension of Q, we verify the semisimplicity and Tate conjectures for the Galois representation on the middle l-adic cohomology of the surface.
机构:
Columbia Univ, Dept Math, Room 509,MC 4406,2990 Broadway, New York, NY 10027 USAColumbia Univ, Dept Math, Room 509,MC 4406,2990 Broadway, New York, NY 10027 USA
Lewis, Paul Dunbar
Lyons, Christopher
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Calif State Univ Fullerton, Dept Math, 800 N State Coll Blvd, Fullerton, CA 92834 USAColumbia Univ, Dept Math, Room 509,MC 4406,2990 Broadway, New York, NY 10027 USA