## Commun. Math. Phys

- H W Wiesbrock
- Commun. Math. Phys
- 1997

@inproceedings{NarnhoferInstituteFM, title={Institute for Mathematical Physics Time Reversibility for Modular K\{systems Time Reversibility for Modular K-systems}, author={Heide Narnhofer} }

We start with a modular K-system that possesses Anosov endomorphisms in both time directions. We extend the system via a crossed product construction. If one of the Anosov endomorphisms can be extended, then also the other one. Also the extensions form a Moebius group and allow a time reeection operator that implements on the algebra an antiisomorphism.

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