Ivanov D V

Publications in Math-Net.Ru

1. Absence of three-dimensional totally geodesic submanifolds in the manifold of directions of physical space
   
   Zap. Nauchn. Sem. POMI, 280 (2001),  173–174
2. Classification of totally geodesic surfaces in the manifold of directions in physical space
   
   Zap. Nauchn. Sem. POMI, 280 (2001),  163–172
3. Totally geodesic subsets in the variety of directions of physical space
   
   Zap. Nauchn. Sem. POMI, 279 (2001),  141–153