For a homework assignment, I'd like to include something like the following image in my document as a single term in an equation:
I know I could simply use another variable name, but my professor prefers this notation. My main problem is placing the P above the B \leftarrow C; is there a way to do this?
\stackrelas in Arrow with plus/minus sign on top? – Torbjørn T. Apr 05 '15 at 18:47\xleftarrow{P}, an extensible arrow. – Bernard Apr 05 '15 at 19:02