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The forcing partial order on the three times punctureddisk

Published online by Cambridge University Press:  01 June 1997

MICHAEL HANDEL
Affiliation:
Department of Mathematics and Science, Lehman College, CUNY, Bedford Park Boulevard, Bronx, NY 10468-1589, USA

Abstract

The two-dimensional analogue of the Sharkovski order on periods for maps of the interval restricts to a partial order on essential pseudo-Anosov conjugacy classes in the mapping class group of the $n$-times punctured disk. In this paper we give an explicit description of this restricted partial order in the case when $n=3$.

Type
Research Article
Copyright
1997 Cambridge University Press

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