An Isodiametric Problem with Additional Constraints in Euclidean space R^3

Yi Yang

Let $C_{\theta }$ be a circular cone in Euclidean space ${\mathbb{R}}^3$,which apex is the origin and apex angle of the cone is $\theta \in \left(\pi /3,\pi \right)$. Let $M_{\theta }$ be the class of compac…