AkashSinghaRoy
Akash Singha Roy
About
Welcome!
I am a postdoctoral researcher in the number theory research group UFOCLAN at Charles University, Prague. I completed my Ph.D. in Mathematics (August 2022-July 2025) at the University of Georgia under the direction of Paul Pollack. I completed my undergraduate studies (August 2018-July 2021) at the Chennai Mathematical Institute, where I obtained a BSc. Honors in Mathematics and Computer Science.
Research Interests
My primary research interests lie in elementary, analytic and combinatorial number theory. In my Ph.D. thesis, I study the residue-class distribution of (families of) arithmetic functions to varying moduli: More precisely, I obtain new analogues of the Siegel-Walfisz theorem for large classes of additive and multiplicative functions, which are essentially optimal in many ways. This work blends ideas that could be thought of as being borrowed from probability (but executed via methods from the “anatomy of integers”), with machinery from linear algebra over rings (a.k.a. module theory), classical analytic number theory, character sums/exponential sums, commutative algebra, as well as arithmetic and algebraic geometry. One of the latest manuscripts on this may be found here.
I am currently working on a variety of new projects. In one of these projects, I give new results on mean values of multiplicative functions that extend the classical Landau-Selberg-Delange “LSD” method to situations where the Dirichlet series under consideration is controlled by Dirichlet $L$-functions mod $q$ (instead of the usual Riemann zeta function); my results allow the conductor $q$ to vary within ranges that are typically much wider than those permitted by known forms of the “LSD” method. More updates on other projects coming soon!
Besides these, I have coauthored papers with Vorrapan (Fai) Chandee, Xiannan Li, Nathan McNew and Paul Pollack, on topics such as
(i) Benford’s law (studying this phenomenon for various sequences of interest such as Hecke eigenvalues of newforms),
(ii) Distributions of intermediate prime factors, and
(iii) Behavior of the “aliquot sum” function $s(n)$.
I am also interested in a variety of other questions on the anatomy of integers, Erdos-type problems and general statistical questions on distributions of arithmetic functions, including Fourier coefficients of modular forms and the partition function.
I have recently received the 2026 Graduate Student Excellence-in-Research Award in the Mathematical and Physical Sciences category: This is a University-wide award recognizing doctoral research achievement and scholarly impact among all disciplines in this category; more general information on this award may be found here. I am the fourth recipient of this award from mathematics, since its inception in 1999, with the previous recipients being in 2003, 2005 and 2016.
I am the 2024 recipient of the William Armor Wills Memorial Scholarship Award from the Department of Mathematics at the University of Georgia.
Contact Information
Email:
akash01s.roy@gmail.com
Previous emails (NO LONGER IN USE):
akash.singharoy@uga.edu