## Editorial Boards

- Annals of Combinatorics.
- Bulletin of the American Mathematical Society, Associate Editor of Book Reviews.
- Communications in Number Theory and Physics.
- The Encyclopedia of Srinivasa Ramanujan and His Mathematics, Springer, Editor-in-Chief.
- Integers.
- The International Journal of Number Theory.
- Involve.
- Journal of Combinatorics and Number Theory.
- Mathematical Intelligencer, Board of Correspondents.
- The Ramanujan Journal.
- Research in the Mathematical Sciences. (Editor-in-Chief)
- Research in Number Theory. (Editor-in-Chief)
- Springer Graduate Texts in Mathematics, Advisory Board

## Advisory Boards

- Institute for Mathematics and Education, Advisory Board, Tucson, Arizona.
- Associate Member, Pohang Mathematics Institute,POSTECH, South Korea.
- U.S. National Committee for Mathematics (2010-present), NAS.
- AMS-MAA-SIAM Morgan Prize Committee, (2016-2019).
- AMS Committee on Publications, (2018-2021).
- U.S. Delegate, International Mathematical Union General Assembly, 2018 ICM.