Pigeonhole Principle Courses
Tsinghua University via edX Combinatorics
Indian Institute of Technology Madras via Swayam Problem Solving Techniques
YouTube Discrete Math II - Combinatorics
Kimberly Brehm via YouTube Discrete Mathematical Structures
NIOS via YouTube A Brief Tour of Proof Complexity - Lower Bounds and Open Problems - Toniann Pitassi
Institute for Advanced Study via YouTube Problem Solving - The Pigeonhole Principle
Michael Penn via YouTube Rotations of the Circle and Renormalization
ICTP Mathematics via YouTube Counting Arithmetic - A New Foundational Approach
Schmid College, Chapman University via YouTube O que é o Princípio da Casa dos Pombos?
Instituto de Matemática Pura e Aplicada via YouTube