nLab
sitting instant

Sitting instants

Definition

A continuous map f:XYf\colon X \to Y from a manifold with boundary to a space YY is said to have sitting instants if there is an open neighbourhood XUX\partial X \subset U \subset X of the boundary such that the restriction f| Uf|_U of ff to that neighbourhood is locally constant? (constant on each connected component).

Revised on April 21, 2012 23:58:46 by Toby Bartels (108.167.17.117)