Genus (topology)/Definition: Difference between revisions

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The number of "holes" or "handles" in a surface; a [[Betti number]].
The number of [[hole (topology)|holes]] or [[handle (topology)|handles]] in a surface; a [[Betti number]].

Revision as of 05:30, 5 February 2010

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Genus (topology) [r]: The number of holes or handles in a surface; a Betti number.