- "Extremal Combinatorics" by Staysys Jukna
- "Convex Optimization" by Boyd and Vandenberghe
- "Delay Insensitive Circuits" [1]
- "An Introduction to Mathematical Cryptography" by Hoffstein, Pipher, and Silverman
- "Quantum Computing since Democritus" by Scott AAronson
[1] https://www.delayinsensitive.com
disclosure: I'm the author.
1. Analysis - The Elias Stein, Rami Shakarchi Analysis series, Meassure Theory by Terrence Tao, Lebesgue Integration on Euclidean Spaces by Frank Jones, A radical approach to Lebesgue Integration by Bressoud
2. Algebra - Can't do much better than the classic texts by Herstein & Artin here. I know Artin doesn't get much love but after a point, you really begin to appreciate it.
3. Complex Analysis - is there a better math book than Visual Complex Analysis by Needham?
4. Topology - i'm partial to a Dover book on Topology by Theodore Gamelin. I learnt the basics of point-set topology & homotopy form this book. Great exercises.
5. Number Theory - check out the 2 problem books on number theory by Ram Murty. Melvyn Nathanson's book is quite good as well.
6. Combinatorics - Combinatorics of Finite Sets by Ian Anderson. Extremal Combinatorics by Jukna.
7. Graph Theory - Diestel or Bondy/Murty.
8. Galois Theory - Rotman is great.