Metric f-Contact Manifolds Satisfying the (κ, μ)-Nullity Condition

Autor: Alfonso Carriazo, Luis M. Fernández, Eugenia Loiudice
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Mathematics, Vol 8, Iss 6, p 891 (2020)
Druh dokumentu: article
ISSN: 2227-7390
DOI: 10.3390/math8060891
Popis: We prove that if the f-sectional curvature at any point of a ( 2 n + s ) -dimensional metric f-contact manifold satisfying the ( κ , μ ) nullity condition with n > 1 is independent of the f-section at the point, then it is constant on the manifold. Moreover, we also prove that a non-normal metric f-contact manifold satisfying the ( κ , μ ) nullity condition is of constant f-sectional curvature if and only if μ = κ + 1 and we give an explicit expression for the curvature tensor field in such a case. Finally, we present some examples.
Databáze: Directory of Open Access Journals
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