Výsledky vyhledávání - "D.V. Vylegzhanin"

On the Symmetric Einstein Equation for Three-Dimensional Lie Groups with Left-Invariant Riemannian Metric and Semi-Symmetric Connection

Autor: A.A. Pavlova, O.P. Khromova, E.D. Rodionov, D.V. Vylegzhanin

Publikováno v: Izvestiya of Altai State University; No 4(126) (2022): Izvestiya of Altai State University; 140-143
Известия Алтайского государственного университета; № 4(126) (2022): Известия Алтайского государственного университета; 140-143

Riemannian manifolds with a Levi-Civita connection and constant Ricci curvature, or Einstein manifolds, were studied in the works of many mathematicians. This question has been most studied in the homogeneous Riemannian case. In this direction, the m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c5048dce3b05e4927370bd4d16a48ae
https://doi.org/10.14258/izvasu(2022)4-21

Zobrazit plný text záznamu

Eigenvalues of the Ricci Operator on Four-Dimensional Locally Homogeneous (Pseudo)Riemannian Manifolds with a Four-Dimensional Isotropy Subgroup

Autor: O.P. Khromova, P.N. Klepikov, D.V. Vylegzhanin

Publikováno v: Izvestiya of Altai State University. :93-96

The problem of restoring a (pseudo)Riemannian manifold from a given Ricci operator was studied in the papers of many mathematicians. This problem was solved by O. Kowalski and S. Nikcevic for the case of three-dimensional locally homogeneous Riemanni

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee2e8605c9036a36d890bb502f2de9fb
https://doi.org/10.14258/izvasu(2021)1-15

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání