absolute retract
A topological space X is an absolute retract
if, for every embedding of X as a closed subset of a normal space
Y, the image of X is a retract
of Y.
A topological space X is an if, for every embedding of X as a closed subset of a normal space Y, the image of X is a neighborhood retract of Y.
Title | absolute retract |
---|---|
Canonical name | AbsoluteRetract |
Date of creation | 2013-03-22 14:39:35 |
Last modified on | 2013-03-22 14:39:35 |
Owner | rspuzio (6075) |
Last modified by | rspuzio (6075) |
Numerical id | 5 |
Author | rspuzio (6075) |
Entry type | Definition |
Classification | msc 54A99 |
Defines | absolute neighborhood retract |