Identity map
From Encyclopedia of Mathematics
on a set $X$
The transformation on $X$, often denoted $1_X$ or $\text{id}_X$ defined by $x \mapsto x$ for all $x \in X$.
How to Cite This Entry:
Identity map. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Identity_map&oldid=39297
Identity map. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Identity_map&oldid=39297