Is there a standard arrow or symbol to represent homomorphisms $R\to S$ between two structures? I would prefer not to write out the word homomorphism every time I need to say something is a homomorphism!
I believe in category theory the arrows are assumed to be homomorphisms?...but not in ring theory, group theory etc. So really looking for a symbol in the latter contexts.
Edit based on current answers: (To clarify im not looking for non-standard abbreviations such as "hom" or "homo" and i'm not looking for symbols/arrows for isomorphisms, surjections, injections etc.)