activity
20242026
collaborators

8 papers

math.NT2026

On the multiplicative pair correlations of sums of two squares

Jouni Parkkonen, Frédéric Paulin

We study the pair correlations of the logarithms of the integral values of quadratic norm forms at various scalings, proving the existence of pair correlation measures. We describe…

math.NT2025

Joint effective equidistribution of partial lattices in positive characteristic

Tal Horesh, Frédéric Paulin

Let be a place of a global function field over a finite field, with associated affine function ring and completion , and let .…

math.NT2025

Farey neighbours, modular symbols and divergent geodesics

Jouni Parkkonen, Frédéric Paulin

We give effective asymptotic counting results for pairs of Farey neighbours and for modular symbols in , in imaginary quadratic number fields and in definite quaternion…

math.DS2025

Counting and equidistribution of strongly reversible closed geodesics in negative curvature

Jouni Parkkonen, Frédéric Paulin

Let be a pinched negatively curved Riemannian orbifold, whose fundamental group has torsion of order . Generalizing results of Sarnak and Erlandsson-Souto for constant curva…

math.NT2025

Equidistribution of divergent diagonal orbits in positive characteristic

Nguyen-Thi Dang, Frédéric Paulin, Rafael Sayous

Given a local field with positive characteristic, we study the dynamics of the diagonal subgroup of the linear group on homogeneous s…

math.DS2025

Equidistribution of divergent geodesics in negative curvature

Jouni Parkkonen, Frédéric Paulin, Rafael Sayous

In the unit tangent bundle of noncompact finite volume negatively curved Riemannian manifolds, we prove the equidistribution towards the measure of maximal entropy for the geodesic…