Curvature Pinching for minimal submanifolds in a sphere


Nevena Pušić




We consider a product space with parallel or recurrent PC-tensor. Using separated coordinate system, we get some more information about its components. If, in addition, the product space is Ricci-recurrent, then, following the results of Adati and Miyazawa and Roter, we can obtain a complete classification for components of such a space.