“Contractible”的概念、定义、习题解题方法及翻译-数学辞典

单词	Contractible
释义	contractible A topological space is said to be contractible if it is homotopy equivalent to a point. Equivalently, the space is contractible if a constant map is homotopic to the identity map. A contractible space has a trivial fundamental group.
随便看	FiniteSubgroup finite subgroup FiniteVariationProcess finite variation process FinslerGeometry Finsler geometry FirstAxiomOfCountability first axiom of countability FirstCountable first countable FirstCountableImpliesCompactlyGenerated first countable implies compactly generated FirstFundamentalForm first fundamental form FirstIsomorphismTheorem first isomorphism theorem first isomorphism theorem FirstIsomorphismTheorem1 FirstIsomorphismTheoremForQuivers First Isomorphism Theorem for quivers FirstOrderLanguage first order language FirstOrderLogic first order logic FirstOrderOperatorsInRiemannianGeometry

数学辞典收录了18232条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。

contractible