Intersection of closed geodesics on a positively curved sphere

ID: intersection-of-closed-geodesics-on-a-positively-curved-sphere

Two disjoint simple closed curves on a sphere bound an annulus . If both are geodesics, its boundary geodesic-curvature terms vanish, whereas . Gauss-Bonnet would give
which is impossible when everywhere.

New to topics? Read the docs here!