Results 81 to 90 of about 144 (107)

Special concircular vector fields in Riemannian manifolds

Hiroshima Mathematical Journal, 1982
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ON SOME RIEMANNIAN MANIFOLDS ADMITTING A CONORCULAR VECTOR FIELD

Demonstratio Mathematica, 1976
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On a recurrent finsler manifold with a concircular vector field

Acta Mathematica Hungarica, 1978
Misra, R. B., Meher, F. M., Kishore, N.
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A recurrent Finsler manifold with a concircular vector field

Acta Mathematica Hungarica, 1980
P N Pandey, Pandey P N
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An Example of a Concircular Vector Field on a Locally Conformally Kähler Manifold

Mathematical Notes, 2022
The authors prove that the Lie vector of a locally conformally Kähler (LCK) manifold of constant curvature is a concircular vector field. They also consider locally conformally nearly Kähler manifolds and their subclass of LCK manifolds of constant curvature. They obtain conditions under which an LCK manifold of constant curvature is recurrent.
V F Kirichenko, Kirichenko V F
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Co-isotropic submanifolds of a para-Cok�hlerian manifold with concircular structure vector field

Journal of Geometry, 1985
The 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 ...
Radu Rosca, Rosca Radu
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D-conformal changes in Riemannian manifolds admitting a concircular vector field

TRU Mathematics, 1984
In 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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On Concircular Transformations in Finsler Geometry

Results in Mathematics, 2019
A geodesic circle in Finsler geometry is a natural extension of that in a Euclidean space. In this paper, we study geodesic circles and (infinitesimal) concircular transformations on a Finsler manifold.
Zhongmin Shen, Guojun Yang, Shen Zhongmin   +2 more
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Concircular vector fields and the Ricci solitons for the LRS Bianchi type-V spacetimes

Modern Physics Letters A, 2020
The 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 semi-Riemannian spaces

Journal of Mathematical Sciences, 2007
In this paper, we construct an analogue of concircular fields for semi-Riemannian spaces (i.e., for manifolds with degenerate metrics). We find a tensor criterion of spaces admitting the maximal number of concircular fields or having no such fields. We detect a gap in the distribution of dimensions of the space of concircular fields, which, in contrast
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