How to Solve It : A New Aspect of Mathematical Method
–G. Polya ISBN 069111966X
Mathematical Circles: Russian Experience
–Dmitri Fomin, et al. ISBN 0821804308
Concepts of Modern Mathematics
–Ian Stewart ISBN 0486284247
Abstract Algebra: Theory and Applications
–Thomas W. Judson ISBN 0534936849
Advanced Engineering Mathematics
–Erwin Kreyszig ISBN 0471154962
Every engineer’s must-have math book. It covers eveything I guess!
Introduction to Probability Models, Eighth Edition
–Sheldon M. Ross ISBN 0125980558
Practical Methods of Optimization
–R. Fletcher ISBN 0471494631
Biography
Men of Mathematics
–E.T. Bell ISBN 0671628186
The Man Who Knew Infinity: A Life of the Genius Ramanujan
–Robert Kanigel ISBN 0671750615
An extremely well-written biography of Ramanujan. Devotes a chapter to Hardy as well. Ramanujan’s genius has been astonishingly portrayed. A must-read for any math enthusiast!
Number Theory
Number Theory for Computing
–M.E. Hellmann, Song Y. Yan ISBN 3540430725
Srinivasa Ramanujan: A Mathematical Genius
–K. Srinivasa Rao ISBN 818685214X
An Introduction to the Theory of Numbers
–G. H. Hardy, E. M. Wright ISBN 0198531710
The Mathematics of Ciphers: Number Theory and RSA Cryptography
–S. C. Coutinho ISBN 1568810822
Gamma : Exploring Euler’s Constant
–Julian Havil, Freeman Dyson ISBN 0691099839
The Music of the Primes: Searching to Solve the Greatest Mystery in Mathematics