Embedded loops in the hyperbolic plane with prescribed, almost constant curvature

Abstract

Given a constant $k>1$ and a real valued function $K$ on the hyperbolic plane $\mathbb H^2$, we study the problem of finding, for any $\epsilon\approx 0$, a closed and embedded curve $u^\epsilon $ in $\mathbb H^2$ having geodesic curvature $k+\epsilon K(u^\epsilon)$ at each point.