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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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Extending finite group actions from surfaces to handlebodies
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by Marco Reni and Bruno Zimmermann
Proc. Amer. Math. Soc. 124 (1996), 2877-2887
DOI: https://doi.org/10.1090/S0002-9939-96-03515-0

Abstract:

We show that every action of a finite dihedral group on a closed orientable surface $\mathcal F$ extends to a 3-dimensional handlebody $\mathcal V$, with $\partial \mathcal V=\mathcal F$. In the case of a finite abelian group $G$, we give necessary and sufficient conditions for a $G$-action on a surface to extend to a compact $3$-manifold, or, equivalently in this case, to a 3-dimensional handlebody; in particular all (fixed-point) free actions of finite abelian groups extend to handlebodies. This is no longer true for free actions of arbitrary finite groups: we give a procedure which allows us to construct free actions of finite groups on surfaces which do not extend to a handlebody. We also show that the unique Hurwitz action of order $84(g-1)$ of $PSL(2,27)$ on a surface $\mathcal F$ of genus $g=118$ does not extend to any compact 3-manifold $M$ with $\partial M=\mathcal F$, thus resolving the only case of Hurwitz actions of type $PSL(2,q)$ of low order which remained open in an earlier paper (Math. Proc. Cambridge Philos. Soc. 117 (1995), 137–151).
References
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Bibliographic Information
  • Marco Reni
  • Affiliation: Dipartimento di Scienze Matematiche, Università degli Studi di Trieste, 34100 Trieste, Italy
  • Email: reni@univ.trieste.it
  • Bruno Zimmermann
  • Affiliation: Dipartimento di Scienze Matematiche, Università degli Studi di Trieste, 34100 Trieste, Italy
  • Email: zimmer@univ.trieste.it
  • Received by editor(s): February 2, 1995
  • Communicated by: Ronald Stern
  • © Copyright 1996 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 124 (1996), 2877-2887
  • MSC (1991): Primary 57M60; Secondary 57S25, 30F99
  • DOI: https://doi.org/10.1090/S0002-9939-96-03515-0
  • MathSciNet review: 1343720