activity
20172026
most citedOn some free algebras of orthogonal modular forms

18 citations · 80 across the 26 of their papers we have counts for

collaborators

33 papers

math.AG2026

Some applications of the moduli space of -polarized K3 surfaces

Adrian Clingher, Andreas Malmendier, Brandon Williams

We study K3 surfaces polarized by the lattice through elliptic fibrations and orthogonal modular forms. Using an alternate genus-one fibration and its relative Ja…

math.AG2026

On the Vinberg Family of K3 Surfaces

Adrian Clingher, Andreas Malmendier, Brandon Williams

We study orthogonal modular forms associated with moduli spaces of lattice-polarized K3 surfaces whose generic transcendental lattices are of the form …

math.NT2023

Automorphic products that are singular modulo primes

Haowu Wang, Brandon Williams

We use Rankin--Cohen brackets on O(n, 2) to prove that the Fourier coefficients of reflective Borcherds products often satisfy congruences modulo certain primes.

math.NT2023★ 1 cited

On the non-existence of singular Borcherds products

Haowu Wang, Brandon Williams

Let and be a modular form of weight on which vanishes only on rational quadratic divisors. We prove that has only simple zeros and that…

math.NT2022

Binary theta functions and Borcherds products

Markus Schwagenscheidt, Brandon Williams

We obtain infinite product expansions in the sense of Borcherds for theta functions associated with certain positive-definite binary quadratic and binary hermitian forms. Among oth…

math.NT2022

Mathieu moonshine and Borcherds products

Haowu Wang, Brandon Williams

The twisted elliptic genera of a surface associated with the conjugacy classes of the Mathieu group are known to be weak Jacobi forms of weight . In 2010, Cheng co…