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On the irreducibility of Hurwitz spaces of coverings with two special fibers

  • Francesca Vetro EMAIL logo
Published/Copyright: May 30, 2012
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Georgian Mathematical Journal
From the journal Volume 19 Issue 2

Abstract.

Let X and Y be smooth, connected, projective complex curves and let . Let and be two integers. Let and be two partitions of d. In this paper we study equivalence classes of pairs satisfying the following: is a degree d covering of Y, f is unramified at b0 and it is branched in points, n of which are points of simple branching, one is a special point whose local monodromy has cycle type and one is a special point whose local monodromy has cycle type . Moreover, is a bijection and the monodromy group of f is . We prove that the corresponding Hurwitz spaces are irreducible under the hypothesis where and denote, respectively, the genus of X and Y.

Received: 2011-08-06
Published Online: 2012-05-30
Published in Print: 2012-June

© 2012 by Walter de Gruyter Berlin Boston

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