“NullhomotopicMap”的概念、定义、习题解题方法及翻译-数学辞典

单词	NullhomotopicMap
释义	nullhomotopic map Let $f:X\\to Y$ be a continuous map. We say that $f$ is nullhomotopic if there is a homotopy from $f$ to a constant map $c$ , that is, $f\\simeq c$ .
随便看	ClosedDifferentialFormsOnASimplyConnectedDomain closed differential forms on a simply connected domain ClosedForm closed form ClosedGraphTheorem closed graph theorem ClosedHausdorffNeighbourhoodsATheoremOn closed Hausdorff neighbourhoods, a theorem on ClosedIdealsInCalgebrasAreSelfadjoint closed ideals in C^*-algebras are self-adjoint ClosedImmersion closed immersion ClosedMonoidalCategory closed monoidal category ClosedOperator closed operator ClosedPoint closed point ClosedSet closed set ClosedSetInACompactSpaceIsCompact closed set in a compact space is compact ClosedSetInASubspace closed set in a subspace ClosedSublattice

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。

nullhomotopic map