contractibility
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wordnet sense
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Collins Definition
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- (Contractible) In mathematics, a topological space X is contractible if the identity map on X is null-homotopic, i.e. if it is homotopic to some constant map. Intuitively, a contractible space is one that can be continuously shrunk to a point.
- (contractible) Capable of contraction; (of a topological set) Able to be reduced to one of its points by a continuous deformation