A New Class of Contact Pseudo Framed Manifolds with Applications

In this paper, we introduce a new class of contact pseudo framed (CPF)-manifolds M,g,f,λ,ξ by a real tensor field f of type 1,1, a real function λ such that f3=λ2f where ξ is its characteristic vector field. We prove in our main Theorem 2 that M admits a closed 2-form Ω if λ is constant. In 1976, Bl...

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Main Author: K. L. Duggal
Format: Article
Language:English
Published: Wiley 2021-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Online Access:http://dx.doi.org/10.1155/2021/6141587
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author K. L. Duggal
author_facet K. L. Duggal
author_sort K. L. Duggal
collection DOAJ
description In this paper, we introduce a new class of contact pseudo framed (CPF)-manifolds M,g,f,λ,ξ by a real tensor field f of type 1,1, a real function λ such that f3=λ2f where ξ is its characteristic vector field. We prove in our main Theorem 2 that M admits a closed 2-form Ω if λ is constant. In 1976, Blair proved that the vector field ξ of a normal contact manifold is Killing. Contrary to this, we have shown in Theorem 2 that, in general, ξ of a normal CPF-manifold is non-Killing. We also have established a link of CPF-hypersurfaces with curvature, affine, conformal collineations symmetries, and almost Ricci soliton manifolds, supported by three applications. Contrary to the odd-dimensional contact manifolds, we construct several examples of even- and odd-dimensional semi-Riemannian and lightlike CPF-manifolds and propose two problems for further consideration.
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spelling doaj-art-421be26476f4454ba520e8daa9caa89d2025-02-03T01:25:14ZengWileyInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04252021-01-01202110.1155/2021/61415876141587A New Class of Contact Pseudo Framed Manifolds with ApplicationsK. L. Duggal0Department of Mathematics and Statistics, University of Windsor, Windsor, Ontario N9B3P4, CanadaIn this paper, we introduce a new class of contact pseudo framed (CPF)-manifolds M,g,f,λ,ξ by a real tensor field f of type 1,1, a real function λ such that f3=λ2f where ξ is its characteristic vector field. We prove in our main Theorem 2 that M admits a closed 2-form Ω if λ is constant. In 1976, Blair proved that the vector field ξ of a normal contact manifold is Killing. Contrary to this, we have shown in Theorem 2 that, in general, ξ of a normal CPF-manifold is non-Killing. We also have established a link of CPF-hypersurfaces with curvature, affine, conformal collineations symmetries, and almost Ricci soliton manifolds, supported by three applications. Contrary to the odd-dimensional contact manifolds, we construct several examples of even- and odd-dimensional semi-Riemannian and lightlike CPF-manifolds and propose two problems for further consideration.http://dx.doi.org/10.1155/2021/6141587
spellingShingle K. L. Duggal
A New Class of Contact Pseudo Framed Manifolds with Applications
International Journal of Mathematics and Mathematical Sciences
title A New Class of Contact Pseudo Framed Manifolds with Applications
title_full A New Class of Contact Pseudo Framed Manifolds with Applications
title_fullStr A New Class of Contact Pseudo Framed Manifolds with Applications
title_full_unstemmed A New Class of Contact Pseudo Framed Manifolds with Applications
title_short A New Class of Contact Pseudo Framed Manifolds with Applications
title_sort new class of contact pseudo framed manifolds with applications
url http://dx.doi.org/10.1155/2021/6141587
work_keys_str_mv AT klduggal anewclassofcontactpseudoframedmanifoldswithapplications
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