Least common multiples of polynomial values: averaging, ray classes, and Galois statistics

Abstract

We study analogues over number fields and the probabilistic congruence input that enters averaged versions of this problem. We prove an asymptotic formula for the least common multiple of ideals in a fixed ray class, record local equidistribution estimates for random $S_n$-polynomials, and give a conditional reduction of the averaged higher degree problem to explicit dispersion and large prime collision estimates. We also formulate an individual quadratic number field analogue and reduce it to a prime ideal quadratic root equidistribution statement together with a geometric pair counting estimate. The Galois group counting input is updated using Bhargava's theorem over $\mathbb Q$ and the determinant method estimates of https://arxiv.org/abs/2610.35030 .