After the f o g and g o f, there is a something and a v. What is that?
Follow Math Help Forum on Facebook and Google+
Originally Posted by dwsmith After the f o g and g o f, there is a something and a v. What is that? That is an iota. Usually it indicates an \.
Originally Posted by dwsmith After the f o g and g o f, there is a something and a v. What is that? $\displaystyle \iota_V:V \to V, \,\,\,\iota_{V}(x) = x, \,\,\forall x \,\in V$.
normally iota is used for an inclusion morphism. if the sub-object is the same as the target of the morphism (just as any set can be a subset of itself), then this becomes the identity map.
View Tag Cloud