# Publishing house / Banach Center Publications / All volumes

## Periodic segments and Nielsen numbers

### Volume 47 / 1999

Banach Center Publications 47 (1999), 247-252 DOI: 10.4064/-47-1-247-252

#### Abstract

We prove that the Poincaré map $φ_{(0,T)}$ has at least $N(\tilde h, cl(W_{0} \ W_{0}^{-}) )$ fixed points (whose trajectories are contained inside the segment W) where the homeomorphism $\tilde h$ is given by the segment W.

#### Authors

• Klaudiusz Wójcik

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