1. Precise asymptotics for periodic orbits of the geodesic flow in nonpositive curvature Open Access Author: Gunesch, Roland Title: Precise asymptotics for periodic orbits of the geodesic flow in nonpositive curvature Graduate Program: Mathematics Keywords: dynamical systemsclosed geodesicsRiemannian geometrygeodesic flowsmeasure of maximal entropynonpositive curvature File: Download etd.pdf Committee Members: John Metzner, Committee MemberProfessor Dr Anatole B Katok, Committee Chair/Co-ChairProfessor Dr Mark Levi, Committee MemberProfessor Dr Serge Tabachnikov, Committee Member