Christopher Lutsko

activity

20192026

collaborators

Showing 2026 · math.SPShow all

2 papers · 2 filters

math.SP2026

Improved sup-norm bounds for locally symmetric spaces

Christopher Lutsko

Let $X = G / K$ be a symmetric space of noncompact type, of dimension $n$ and rank $r$ , and let $Y = Γ\ X$ . Sarnak's local bound for an $L^{2}$ -normalized spherical joint eigenfun…

math.SP2026

Exceptional eigenvalue density for thin groups

Christopher Lutsko

We prove a limit multiplicity conjecture of Hee Oh for principal congruence covers of geometrically finite hyperbolic manifolds, with an explicit power-saving rate. The rate is gov…