Given a subset 
of a set 
, the injection 
defined by 
for all 
is called the inclusion map.
Inclusion Map
See also
Long Exact Sequence of a Pair AxiomExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Inclusion Map." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/InclusionMap.html