I'm looking for a giant tome on every theorem and formula. If it had more, that would be awesome, but I'm just looking for one giant book to use as a reference. I prefer to learn theorems and formulas after learning how they were discovered, but I also want a "scope" of what's available out there. For example, I had never knew that Pappus's Centroid Theorem had existed until I google'd it. Although I knew the concepts in Pappus's Centroid Theorem, I had never knew that it had a formal name. Thus, I want a book (or a gigantic tome) filled with every possible formula, theorem, etc. It can be dense or condense. If it were dense, I'd digest it on my spare time, as I find joy reading proofs. :D Just one big big big big mathematics book for reference! I look at the Princeton Companion to Mathematics and it seemed bad.