Convex subset of a geodesic metric space
= Convex subset of a geodesic metric space
A subset $Y$ of a geodesic metric space is convex when every geodesic whose endpoints lie in $Y$ is contained in $Y$.
= Convex subset of a geodesic metric space
A subset $Y$ of a geodesic metric space is convex when every geodesic whose endpoints lie in $Y$ is contained in $Y$.