Introduction to Combinatorics

Lecture Notes on Graph Theory: Lecture Notes on Graph Theory

MATHEMAICS FORMULAE

A Beginner's Guide to Graph Theory: Edition 2

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

A Beginner’s Guide to Discrete Mathematics

Proof and the Art of Mathematics

A Beginner's Guide to Finite Mathematics: For Business, Management, and the Social Sciences, Edition 2

Combinatorial Optimization: Algorithms and Complexity

Magic Graphs

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

Combinatorial Designs and Applications

Numbers, Groups and Codes: Edition 2

Principles And Techniques In Combinatorics

Mathematics in the Real World

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

Introduction to Combinatorial Designs: Edition 2

P&C by Yusuf Khan: The FirstBook of COMBINATORICS

The Mathematics of Elections and Voting