Reddit reviews Mathematical Notation: A Guide for Engineers and Scientists

Mathematical Notation: A Guide for Engineers and Scientists has helped me out a lot. It isn't really a "math book", in that it doesn't really teach you concepts. But it tells you what things are and what they do in general. So if you don't know what Σ means, it will tell you, and at least give you a place to start.

For crypto you probably also want a book on number theory.

Also, Understanding Cryptography: A Textbook for Students and Practitioners is the best intro to cryptography book I've come across. I found it easy to understand (relative to other books).

Is it "Mathematical Notation: A Guide for Engineers and Scientists" - https://www.amazon.com/gp/product/1466230525/ ? It's only 84 pages so maybe not.

I own a copy of "Mathematical Notation: A Guide for Engineers and Scientists." It is a slim and handy book that is cheap on Amazon.com (http://www.amazon.com/Mathematical-Notation-Guide-Engineers-Scientists/dp/1466230525).

It covers the topics you mentioned and gives very readable definitions for the notation/terminology. As a math student I have found the latex references quite useful as well!

I'd recommend Mathematical Notation: A Guide for Engineers and Scientists - it's only $10