More of a "Math for CS" cheatsheet. I agree that we can't call it a CS sheet as it has very few actual CS concepts (besides the O notation, I would also consider Graph Theory as CS), but I also wouldn't call it a general math sheet because it encompasses only an arbitrary small subset of math. Having said that, as a Math-for-CS sheet I found the section on matrices a bit light (missing quite a lot of linear algebra), and I missed the Fourier transform.