Editorial Boards.
- Bulletin of the American Mathematical Society, Associate Editor of Book Reviews.
- Communications in Number Theory and Physics.
- Integers.
- International Journal of Modern Mathematics.
- The International Journal of Number Theory.
- The International Mathematical Forum.
- Involve.
- Journal of Combinatorics and Number Theory.
- Online Journal of Analytic Combinatorics.
- Proceedings of the American Mathematical Society.
- The Ramanujan Journal.
Advisory Boards.
- Davidson Institute for Talent Development.
- Institute for Mathematics and Education.
- Associate Member, Pohang Mathematics Institute, POSTECH, South Korea.