This is an old revision of the document!
Retraction
Definition
$X,S$ |
$S\subseteq X$ |
$ \{\rho\} $ |
---|
$ \rho:X\to S $ |
$ \rho_{|S}=\text{id}_S $ |
---|
Ramifications
Reference
Wikipedia: Deformation retract
This is an old revision of the document!
$X,S$ |
$S\subseteq X$ |
$ \{\rho\} $ |
---|
$ \rho:X\to S $ |
$ \rho_{|S}=\text{id}_S $ |
---|
Wikipedia: Deformation retract