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Proceedings of the American Mathematical Society

ISSN 1088-6826(online) ISSN 0002-9939(print)

 

 

The representation of homeomorphisms on the interval as finite compositions of involutions


Author: Sam W. Young
Journal: Proc. Amer. Math. Soc. 121 (1994), 605-610
MSC: Primary 54H15; Secondary 54C05
DOI: https://doi.org/10.1090/S0002-9939-1994-1243177-8
MathSciNet review: 1243177
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Abstract: It is known that every homeomorphism on the interval is the composition of at most four involutions and that every decreasing homeomorphism is the composition of at most three involutions. We will characterize those homeomorphisms that are the composition of two involutions. It is then demonstrated that there exist three involutions that together generate a dense subgroup of the topological group of all homeomorphisms on the interval.


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Additional Information

DOI: https://doi.org/10.1090/S0002-9939-1994-1243177-8
Keywords: Homeomorphism, involution, composition, conjugate
Article copyright: © Copyright 1994 American Mathematical Society