This is perhaps half a math question and half a typesetting one. In what circumstances do I use
\mapsto and when
\rightarrow? I feel like the standard seems to be: when you're specifying the operator you use
\rightarrow, but if you're just saying that one domain maps to another you use
\mapsto. Is that correct?
e.g. I would say
Q\times\Gamma\mapsto Q but