Vol. 168, No. 1, 1995

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Maps on infra-nilmanifolds

Kyung Bai Lee

Vol. 168 (1995), No. 1, 157–166
Abstract

We show that Bieberbach’s rigidity theorem for flat manifolds still holds true for any continuous maps on infra-nilmanifolds. Namely, every endomorphism of an almost crystallographic group is semi-conjugate to an affine endomorphism. Applying this result to Fixed-point theory, we obtain a criterion for the Lefschetz number and Nielsen number for a map on infra-nilmanifolds to be equal.

Mathematical Subject Classification 2000
Primary: 57S30
Secondary: 57M50
Milestones
Received: 14 July 1992
Published: 1 March 1995
Authors
Kyung Bai Lee