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单词 BettiNumber
释义

Betti number


Let X denote a topological spaceMathworldPlanetmath, and let Hk(X,) denote the k-th homology groupMathworldPlanetmath of X. If Hk(X,) is finitely generatedMathworldPlanetmath, then its rank is called the k-th Betti numberMathworldPlanetmath of X.

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更新时间:2025/5/4 12:56:52