deformation retract

== English == === Alternative forms === (verb): deformation-retract === Noun === deformation retract (plural deformation retracts) (topology) A subspace such that there is a retraction onto it of the ambient space homotopic to the identity function on the ambient space. ==== Translations ==== ==== Further reading ==== deformation retract on Wikipedia.Wikipedia === Verb === deformation retract (third-person singular simple present deformation retracts, present participle deformation retracting, simple past and past participle deformation retracted) To have a deformation retract as a subspace. ==== Usage notes ==== The ambient space is said to deformation retract onto the subspace.