 Inclusion map

For a subspace $A\subseteq X$, the inclusion map is the injective function $i:A\to X$ given by $i(a)=a$.

An **inclusion map** is a concept used in various areas of mathematics, especially in topology and algebra. Generally, it refers to a function that "includes" one structure within another. Here are two common contexts where the term is used: 1. **Topology**: In topology, an inclusion map typically refers to the function that includes one topological space into another.