A generalized Jacobi operator in the 4-dimensional Riemannian geometry
Authors
Grozio Stanilov
Irina Petrova
Abstract
We consider a Riemannina manifold of dimension with curvature tensor . At a point we take a 2-dimensional tangent plane of the tangent space , spanned by an orthonormal pair of vectors . We define the lienar operator by . It is a symmetric operator and a very important fact is namely the assertion it is invariant operator under the orthogonal transformations in . This gives us the possibility to define an operator in respect to any in . In the general case its eigen values depend of and of also. Then we investigate the class of -Riemannian manifolds of dimension 4 with the property the eigen values of the operators are independent of
Stanilov, G., & Petrova, I. (1993). A generalized Jacobi operator in the 4-dimensional Riemannian geometry. Ann. Sofia Univ. Fac. Math. And Inf., 85, 55–64. Retrieved from https://annual.uni-sofia.bg/index.php/fmi/article/view/454