• Graph theory and algorithms

Spectral Graph Theory and its Applications by D. Spielman

Combinatorics of large sparse graphs by F. Chung

Random walks on directed and undirected graphs by F. Chung

Graph theory by R. Diestel

Graph-Theoretic Algorithms by T. Biedl

Computational geometry by J. Chen

Algorithms and complexity by H. Wilf

  • Theory of computation

Introduction to theory of computation by E. Gurari

  • Discrete mathematics

Lecture Notes on Discrete Mathematics by László Lovász 

A Short Course in Discrete Mathematics by Edward A. Bender & S. Gill Williamson

  • Numerical analysis, Optimization

Lecture notes on Optimization by Pravin Varaiya

Computational optimization by J. Chen

 

  • Other collections

Lecture notes online: Microeconomics, Mathematics, Macroeconomics, Econometrics, Software Tutorials