absolute retract
absolute retract
[¦ab·sə‚lüt ri′trakt] (mathematics)
A topological space, A, such that, if B is a closed subset of another topological space, C, and if A is homeomorphic to B, then B is a retract of C.
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Note that any absolute retract (AR-space) is an AMR-space and any absolute neighbourhood retract (ANR-space) is an ANMR-space.
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