Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
Abstrakty
The object of the present paper is to study a transformation called D-homothetic deformation of trans-Sasakian structure. Among others it is shown that in a trans-Sasakian manifold, the Ricci operator Q does not commute with the structure tensor phi and the operator Qphi - phiQ is conformal under a D-homothetic deformation. Also the phi-sectional curvature of a trans-Sasakian manifold is conformal under such a deformation. Some non-trivial examples of trans-Sasakian (non-Sasakian) manifolds with global vector fields are obtained.
Wydawca
Czasopismo
Rocznik
Tom
Strony
171--188
Opis fizyczny
Bibliogr. 16 poz.
Twórcy
autor
autor
autor
- Department of Mathematics University of Burdwan, Golapbag, Burdwan-713104 West Bengal, India, aask2003@yahoo.co.in
Bibliografia
- [1] A. Gray and L. M. Hervella, The sixteen dasses of almost Hermitian manifolds and their linear invariants, Ann. Mat. Pura. Appl. 123 (4) (1980), 35-58.
- [2] D. Chinea and C. Gonzalez, A classification of almost contact metric manifolds, Ann. Mat. Pura. Appl. (IV), 156 (4) (1990), 15-36.
- [3] D. E. Blair, Contact Manifolds in Riemannian Geometry, Lecture Notes in Math. 509, Springer-Verlag, 1976.
- [4] D. E. Blair and J. A. Oubina, Conformal and related changes of metric on the product of two almost contact metric manifolds, Publ. Mat. 34 (1990), 199-207.
- [5] D. Janssens. L. Vanhecke, Almost contact structures and curvature tensors, Kodai Math. J. 4 (1981), 1-27.
- [6] J. A. Oubina, New class of almost contact metric manifolds, Publ. Math. Debrecen, 32 (1985), 187-193Pura. Appl. 162 (4) (1992), 77-86.
- [7] J. C. Marrero, The local structure of trans-Sasakian manifolds, Ann. Math. Pura. Appl. 162 (4) (1992), 77-86.
- [8] K. Kenmotsu, A class of almost contact Riemannian manifolds, Tohoku Math. J. 24 (1972), 93-103.
- [9] K. Ogiue, On almost contact manifolds admitting axioms of planes of axiom of the mobility, Kodai. Math. Sem. Rep. 16 (1964), 223-232.
- [10] S. Tanno, The topology of contact Riemanmian manifolds, Tohoku Math. J., 12 (1968), 700-717.
- [11] S. Tanno, Ricci curvature of contact Riemannian manifolds, Tohoku Math. J. 40 (1988), 441-448.
- [12] S. Tanno, Partialiy conformal transformations with respect to (m-l)-dimensiomal distribution of m-dimensional Riemannian manifolds, Tohoku Math. J. 2 (17) (1965), 358-409.
- [13] S. Tanno, Harmonic forms and Betti numbers of certain contact manifolds, J. Math. Soc. Japan, (19) (1967), 308-316.
- [14] S. Tanno, The automorphimorphism groups of almost Riemannian manifolds, Tohoku Math. J. (21) (1969), 21-38.
- [15] S. Tanno, Sasakian manifolds with constant φ-holomorphic sectional curvature, Tohoku Math. J. (21) (1969), 501-507.
- [16] U. C. De, M. M. Tripathi, Ricci tensor in 3-dimensional trans-Sasakian manifolds, Kyungpook Math. J. 43 (2) (2003), 247-255.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-PWA3-0047-0018