- Feature Paper
- Article
Almost Complex and Hypercomplex Norden Structures Induced by Natural Riemann Extensions
- Cornelia-Livia Bejan and
- Galia Nakova
The Riemann extension, introduced by E. K. Patterson and A. G. Walker, is a semi-Riemannian metric with a neutral signature on the cotangent bundle T∗M of a smooth manifold M, induced by a symmetric linear connection ∇ on M. In this pape...