Closed geodesics on hyperbolic surfaces with few intersections
Wujie Shen
Published: 2024/3/1
Abstract
We prove that, if a closed geodesic $\Gamma$ on a complete finite type hyperbolic surface has at least 2 self-intersections, then the length of $\Gamma$ has an lower bound $2\log(5+2\sqrt6)$, and the lower bound is sharp, attained on a corkscrew geodesic on a thrice punctured sphere.