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Turkish Journal of Mathematics

Abstract

We give an explicit formula for the signature of handlebody bundles over the circle interms of the homological monodromy. This gives a cobounding function of Meyer's signature cocycle on the mapping class group of a 3-dimensional handlebody, i.e. the handlebody group. As an application, we give a topological interpretation for the generator of the first cohomology group of the hyperelliptic handlebody group.

DOI

10.3906/mat-1911-67

Keywords

Signature cocycle, handlebody group, mapping class groups

First Page

1520

Last Page

1533

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