Irreducibility of Hurwitz spaces of coverings with monodromy groups Weyl groups of type W(B_d)

Francesca Vetro

Irreducibility of Hurwitz spaces of coverings with monodromy groups Weyl groups of type W(B_d)

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Abstract

Let Y be a smooth, connected, projective complex curve of genus ≥0. R. Biggers and M. Fried [J. Reine Angew. Math. 335, 87–121 (1982; Zbl 0484.14002), Trans. Am. Math. Soc. 295, No. 1, 59–70 (1986; Zbl 0601.14022)] proved the irreducibility of the Hurwitz spaces which parametrize coverings of ℙ 1 whose monodromy group is a Weyl of type W(D d ). Here we prove the irreducibility of Hurwitz spaces that parametrize coverings of Y with monodromy group a Weyl group of type W(B d ).

Lingua originale	English
pagine (da-a)	405-431
Numero di pagine	27
Rivista	BOLLETTINO DELL'UNIONE MATEMATICA ITALIANA. B
Volume	10
Stato di pubblicazione	Published - 2007

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AB - Let Y be a smooth, connected, projective complex curve of genus ≥0. R. Biggers and M. Fried [J. Reine Angew. Math. 335, 87–121 (1982; Zbl 0484.14002), Trans. Am. Math. Soc. 295, No. 1, 59–70 (1986; Zbl 0601.14022)] proved the irreducibility of the Hurwitz spaces which parametrize coverings of ℙ 1 whose monodromy group is a Weyl of type W(D d ). Here we prove the irreducibility of Hurwitz spaces that parametrize coverings of Y with monodromy group a Weyl group of type W(B d ).

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