Algebraic Combinatorics

Lecture Notes on Graph Theory: Lecture Notes on Graph Theory

MATHEMAICS FORMULAE

Problems and Solutions for Integer and Combinatorial Optimization: Building Skills in Discrete Optimization

Proof and the Art of Mathematics

Set Theory and Logic

Combinatorial Optimization: Algorithms and Complexity

How to Guard an Art Gallery: And Other Discrete Mathematical Adventures

Numbers, Groups and Codes: Edition 2

Principles And Techniques In Combinatorics

Theorems And Lemmas In Mathematics

Problems And Solutions In Mathematical Olympiad (Secondary 1)

PHP By Yusuf Khan: 115 Solved Problems on The Pigeon Hole Principle

P&C by Yusuf Khan: The FirstBook of COMBINATORICS

Chromatic Graph Theory