Periodic maps of composite order on positive definite 4-manifolds

Details Periodic maps of composite order on positive definite 4-manifolds Periodic maps of composite order on positive definite 4-manifolds

2002-05-10

arxiv.org/abs/math/0205110v3

Geom. Topol. 9(2005) 315-339

Mathematics

Geometric Topology

Published by Geometry and Topology at http://www.maths.warwick.ac.uk/gt/GTVol9/paper10.abs.html

Scientific paper

The possibilities for new or unusual kinds of topological, locally linear periodic maps of non-prime order on closed, simply connected 4-manifolds with positive definite intersection pairings are explored. On the one hand, certain permutation representations on homology are ruled out under appropriate hypotheses. On the other hand, an interesting homologically nontrivial, pseudofree, action of the cyclic group of order 25 on a connected sum of ten copies of the complex projective plane is constructed.

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