International Mathematical Olympiads
Functions, Polynomials, and Sequences (136 pages)
My 9 Problems on International Mathematical Olympiads
List of the proposing countries of the IMO problems [1988 – 2017]
Facebook Page at https://www.facebook.com/InftyMO
Infinity (204 pages, with Tom Lovering, and Cosmin Pohoata)
Problems in Elementary Number Theory (87 pages, with Peter Vandendriessche) and Solutions
The International Mathematical Olympiad (IMO) is an annual six-problem mathematical olympiad for pre-college students. Each participating country may submit problems to a Problem Selection Committee which reduces the submitted problems to a shortlist. I am the unique Korean IMO problem composer since 1988 when Korea first participated at IMO. The other distinguished IMO problem composers include David Monk [United Kingdom, 14 Problems, 1968–1998] and Jan van de Craats [Netherlands, 11 Problems, 1974–1985].