Adjective
Capable of contraction.
Source: Webster's dictionaryIf the manifold is σ-compact and not compact the full diffeomorphism group is not locally contractible for any of the two topologies. Source: Internet
; Contractible : A space X is contractible if the identity map on X is homotopic to a constant map. Source: Internet
Every contractible space is path connected and thus also connected. Source: Internet
It makes no sense at this point to talk about the most contractible issue. Source: Internet