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Transitive Factorizations in the Hyperoctahedral Group

Published online by Cambridge University Press:  20 November 2018

G. Bini ,
I. P. Goulden  and
D. M. Jackson
G. Bini
Affiliation:
Dipartimento di Matematica, Università degli Studi di Milano, Milano, Italy e-mail: gilberto.bini@mat.unimi.it
I. P. Goulden
Affiliation:
Department of Combinatorics and Optimization, University of Waterloo, Waterloo, ON e-mail: ipgoulde@math.uwaterloo.ca e-mail: dmjackso@math.uwaterloo.ca
D. M. Jackson
Affiliation:
Department of Combinatorics and Optimization, University of Waterloo, Waterloo, ON e-mail: ipgoulde@math.uwaterloo.ca e-mail: dmjackso@math.uwaterloo.ca
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Abstract

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The classical Hurwitz enumeration problem has a presentation in terms of transitive factorizations in the symmetric group. This presentation suggests a generalization from type $A$ to other finite reflection groups and, in particular, to type $B$. We study this generalization both from a combinatorial and a geometric point of view, with the prospect of providing a means of understanding more of the structure of the moduli spaces of maps with an ${{\mathfrak{S}}_{2}}$-symmetry. The type $A$ case has been well studied and connects Hurwitz numbers to the moduli space of curves. We conjecture an analogous setting for the type $B$ case that is studied here.

Keywords

05A1514H1058D29
Type
Research Article
Information
Canadian Journal of Mathematics , Volume 60 , Issue 2 , 01 April 2008 , pp. 297 - 312
Copyright
Copyright © Canadian Mathematical Society 2008

References

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