Sparse Equidistribution: the Horocycle Flow at Products of Two Primes - IHES

Sparse Equidistribution: the Horocycle Flow at Products of Two Primes

We review some results and questions concerning sparse equidistribution results for horocycle flows in constant curvature, and present a recent result joint with Kanigowski and Radziwill that horocycle flows equidistribute for all points with infinite discrete orbit along times equal to products of two primes.