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单词 SemilocallySimplyConnected
释义

semilocally simply connected


A topological spaceMathworldPlanetmath X is semilocally simply connected if, for every point xX, there exists a neighborhood U of x such that the map of fundamental groupsMathworldPlanetmathPlanetmath

π1(U,x)π1(X,x)

induced by the inclusion mapMathworldPlanetmath UX is the trivial homomorphismPlanetmathPlanetmathPlanetmathPlanetmathPlanetmathPlanetmathPlanetmath.

A topological space X is connected, locally path connected, and semilocally simply connected if and only if it has a universal coverMathworldPlanetmath.

Titlesemilocally simply connected
Canonical nameSemilocallySimplyConnected
Date of creation2013-03-22 12:38:46
Last modified on2013-03-22 12:38:46
Ownerdjao (24)
Last modified bydjao (24)
Numerical id6
Authordjao (24)
Entry typeDefinition
Classificationmsc 54D05
Classificationmsc 57M10
Synonymsemilocally 1-connected
Synonymlocally relatively simply connected
Related topicConnected2
Related topicSimplyConnected
Related topicConnectedSpace
Related topicLocallyConnected
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更新时间:2025/5/3 13:25:12