Discrete Mathematics and Its Applications
Kenneth H. Rosen
The Art of Computer Programming: Fundamental Algorithms
Donald E. Knuth
The Art of Computer Programming (1)
The Art of Computer Programming, Volume 4A: Combinatorial Algorithms, ...
The Art of Computer Programming (4)
Introduction to Linear Algebra (OCR)
Gilbert Strang
Notes on Diffy Qs: Differential Equations for Engineers
Jiri Lebl