Sankhya: The Indian Journal of Statistics

2000, Volume 62, Series A, Pt. 3, pp. 339--349

ON EXACT GROUP EXTENSIONS

By

JON AARONSON, Tel Aviv University, Israel

and

MANFRED DENKER, Universität Göttingen, Germany

SUMMARY. We give conditions for the exactness of R-extensions.

AMS (1991) subject classification. Primary 28D05, 60B15; secondary 58F15, 58F19, 58F30.

Key words and phrases. Skew product, group extension, exactness, Gibbs-Markov map, transfer operator.

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