Semi-symmetric Lorentzian three-manifolds admitting a parallel degenerate line field

Autor:	Giovanni Calvaruso, Barbara De Leo
Přispěvatelé:	Calvaruso, G., DE LEO, B., Calvaruso, Giovanni, DE LEO, Barbara
Jazyk:	angličtina
Rok vydání:	2010
Předmět:	Pure mathematics Line field Homogeneous General Mathematics Operator (physics) Degenerate energy levels Mathematical analysis Mathematics::Differential Geometry Function (mathematics) Causal structure Curvature Mathematics
Popis:	We characterize semi-symmetric Lorentzian three-manifolds (M,gf) admitting a parallel degenerate line field, through a condition on the defining function f. The admissible Segre types of the Ricci operator of (M,gf) are also completely described, and semi-symmetric curvature homogeneous examples are presented in the possible different cases.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d51533c5e24209c78d1fa37dd876a139 https://hdl.handle.net/11587/332865 Zobrazit plný text záznamu