Horocycle flows at semi-prime times
Talk by Prof. Dr. Adam Kanigowski
Date: 25.09.24 Time: 13.30 - 14.30 Room: Y27H28
In this joint work with G. Forni and M. Radziwill we study the orbits of horocycle flows when sampled at semi-primes (integers with at most two prime factors). We show that if the lattice is arithmetic then such orbits equidistribute towards Haar measure for every non-periodic point. During the talk I will outline a new criterion for semi-primes, and describe main ideas of the proof.