Definitions for mapping class group

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Wiktionary

  1. mapping class group(Noun)

    The group of self-homeomorphisms of a topological space, modulo homotopy.

Freebase

  1. Mapping class group

    In mathematics, in the sub-field of geometric topology, the mapping class group is an important algebraic invariant of a topological space. Briefly, the mapping class group is a discrete group of 'symmetries' of the space.

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"mapping class group." Definitions.net. STANDS4 LLC, 2014. Web. 25 Oct. 2014. <http://www.definitions.net/definition/mapping class group>.

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