Results 71 to 80 of about 125 (89)
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On a recurrent finsler manifold with a concircular vector field
Acta Mathematica Hungarica, 1978Misra, R. B., Meher, F. M., Kishore, N.
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International Journal of Geometric Methods in Modern PhysicsWe obtained the solutions of Einstein’s Field Equations (EFEs) for locally rotationally symmetric (LRS) Bianchi type-I perfect fluid spacetimes through the concircular vector fields (CCVFs) in [Formula: see text] gravity. It is shown that such metrics admit CCVFs of 4, 5, 6, 7, 8 and 15 dimensions. We also calculated the energy density, fluid pressure,
Suhail Khan +3 more
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A recurrent Finsler manifold with a concircular vector field
Acta Mathematica Hungarica, 1980P N Pandey, Pandey P N
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Concircular vector fields and the Ricci solitons for the LRS Bianchi type-V spacetimes
Modern Physics Letters A, 2020The purpose of this paper is to explore concircular vector fields (CVFs) of locally rotationally symmetric (LRS) Bianchi type-V spacetimes and to investigate whether these CVFs are Ricci soliton vector fields. We first obtained the concircular equations and then solved them by integrating directly.
Amjad Mahmood, Ahmad T. Ali, Suhail Khan
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Concircular vector fields on lightlike submanifolds
Summary: Concircular vector fields on lightlike submanifolds are investigated. With the aid of this review, some relations on Ricci soliton lightlike submanifolds containing concircular vector fields are obtained.Gulbahar, Mehmet +3 more
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Co-isotropic submanifolds of a para-Cok�hlerian manifold with concircular structure vector field
Journal of Geometry, 1985The authors study the concept of CR-submanifold in a para-cokählerian manifold [see the authors, C. R. Acad. Sci., Paris, Sér. A 285, 723-726 (1977; Zbl 0371.53046)]. Here they prove that any co-isotropic submanifold of a para-cokählerian manifold has two CR-structures and then they obtain results on the geometry of the distributions involved in the ...
Buchner, Klaus, Rosca, Radu
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D-conformal changes in Riemannian manifolds admitting a concircular vector field
TRU Mathematics, 1984In previous papers [ibid. 19, 179-193 (1983; Zbl 0539.53035), and 20, 111-123 (1984; Zbl 0554.53033)], we treated the D-conformal curvature tensor \(B^ h_{kji}\), D-concircular curvature tensors \(U^ h_{kji}\) and \(Z^ h_{kji}\) in a special para-Sasakian manifold, which were introduced by the second author [Tensor, New Ser. 39, 117-123 (1982; Zbl 0517.
ADATI, TYUZI, CHÛNAN, GORÔ
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Rendiconti del Circolo Matematico di Palermo, 1988
Let (M,U,\(\xi\),\(\Omega\),\(\eta\),g) be a para-coKählerian manifold of dimension \(2m+1\). Here, g is a pseudo-Riemannian metric of signature \((m+1,m)\), \(\xi\) is the canonical vector field (which is supposed to be concircular), U is the paracomplex operator, \(\eta\) is the structure 1- form and \(\Omega\) the fundamental 2-form.
Buchner, K., Rosca, R.
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Let (M,U,\(\xi\),\(\Omega\),\(\eta\),g) be a para-coKählerian manifold of dimension \(2m+1\). Here, g is a pseudo-Riemannian metric of signature \((m+1,m)\), \(\xi\) is the canonical vector field (which is supposed to be concircular), U is the paracomplex operator, \(\eta\) is the structure 1- form and \(\Omega\) the fundamental 2-form.
Buchner, K., Rosca, R.
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Concircular Vectors Field in (kappa; mu)-Contact Metric Manifolds
2017The aim of the present paper is to study (kappa,mu)-contact manifolds admitting a non-null concircularvector field and concurrent vector field. We prove that in both the cases the manifold becomes aSasakian manifold under certain restriction on kappa, mu.
MAJHİ, Pradip, GHOSH, Gopal
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