You probably want to look at a couple of good undergrad textbooks (calculus, linear algebra, probability). The good textbooks explain the notation and have an i

You probably want to look at a couple of good undergrad textbooks (calculus, linear algebra, probability). The good textbooks explain the notation and have an index for all the symbols. Unfortunately, in most cases, you have to know a little bit about the field in order to be able to parse the notation. The upside is that having some background is pretty much a necessity to not screwing up when you try to implement some algorithm.