Pseudofree group actions on spheres
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- by Allan L. Edmonds PDF
- Proc. Amer. Math. Soc. 138 (2010), 2203-2208 Request permission
Abstract:
R. S. Kulkarni showed that a finite group acting pseudofreely, but not freely, preserving orientation, on an even-dimensional sphere (or suitable sphere-like space) is either a periodic group acting semifreely with two fixed points, a dihedral group acting with three singular orbits, or one of the polyhedral groups, occurring only in dimension 2. It is shown here that the dihedral group does not act pseudofreely and locally linearly on an actual $n$-sphere when $n\equiv 0\mod 4$. It is also shown that the dihedral group does act pseudofreely and locally linearly, with three singular orbits, on an $n$-manifold when $n\equiv 2\mod 4$. Orientation-reversing actions are also considered.References
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Additional Information
- Allan L. Edmonds
- Affiliation: Department of Mathematics, Indiana University, Bloomington, Indiana 47405
- MR Author ID: 61840
- Email: edmonds@indiana.edu
- Received by editor(s): June 19, 2009
- Published electronically: February 11, 2010
- Communicated by: Daniel Ruberman
- © Copyright 2010
American Mathematical Society
The copyright for this article reverts to public domain 28 years after publication. - Journal: Proc. Amer. Math. Soc. 138 (2010), 2203-2208
- MSC (2010): Primary 57S25; Secondary 57S17
- DOI: https://doi.org/10.1090/S0002-9939-10-10339-6
- MathSciNet review: 2596060
Dedicated: Dedicated to José María Montesinos on the occasion of his 65th birthday