Hajir, Farshid - California State University, San Marcos. Elliptic curves, extensions with restriced ramification, and special values of L-functions. On-line seminar, teaching information.
Harcos, Gergely - University of Texas at Austin. Automorphic forms. Publications, thesis.
Hare, Kevin G. - University of Waterloo. Algebraic numbers, polynomials. Publications, worksheets.
Helfgott, Harald A. - Université de Montréal. Number theory, elliptic curves, automorphic forms, combinatorics. Publications, teaching materials.
Hess, Florian - Technische Universität Berlin. Algebraic function fields, algebraic number fields and algorithms.
Heuberger, Clemens - Technische Universität Graz. Diophantine equations, especially Thue equations; Digit expansions; Graph theory; Combinatorial optimization. Publications.
Howson, Susan - University of Oxford. Arithmetic of elliptic curves, Iwasawa theory, p-adic L-functions and the theory of Euler systems. Papers, seminars and other resources.
Hughes, Chris - University of Michigan. Application of random matrix theory to the Riemann zeta function and other L-functions. Publications, resources.