I'm trying to write a set subtraction operation in an AMS formatted template. In the end, what I want should look like A\B. But I'm doing this in math-mode $A\B$ and this gives me errors. I've also ...
The amssymb package has a binary relation symbol named \between, which I have never come across. What is it used for? I found out from a compiler error when I tried to define a symbol named that way ...
I had recently updated my MikTeX 2.9, but after I did that, two packages - amsthm and amssymb - disappeared. My editor outputs an error whenever I call them, and I can't find them in the package ...