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Transactions of the American Mathematical Society

ISSN 1088-6850(online) ISSN 0002-9947(print)

 

 

Wrappings of permutations


Author: Saul Stahl
Journal: Trans. Amer. Math. Soc. 300 (1987), 133-152
MSC: Primary 20F05
DOI: https://doi.org/10.1090/S0002-9947-1987-0871668-9
MathSciNet review: 871668
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Abstract: A theory of wrappings of permutations is constructed which is analogous to the well-known concept of branched coverings of Riemann surfaces. It is shown that this theory is strong enough to contain combinatorial definitions of such well-known groups as Fuchsian groups of the first kind and triangle groups.


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DOI: https://doi.org/10.1090/S0002-9947-1987-0871668-9
Article copyright: © Copyright 1987 American Mathematical Society