Results 21 to 30 of about 275 (150)

Rigidity of Minimal Legendrian Submanifolds in Sasakian Space Forms

open access: yesJournal of Mathematics
This paper is concerned with the study on rigidity of minimal Legendrian submanifolds in Sasakian space forms under some certain geometric conditions, motivated by the classification of minimal Legendrian submanifolds with constant sectional curvature ...
Dehe Li, Sicheng Li
doaj   +2 more sources

ϕ-semisymmetric generalized Sasakian space-forms

open access: yesArab Journal of Mathematical Sciences, 2015
The object of the present paper is to study ϕ-Weyl semisymmetric and ϕ-projectively semisymmetric generalized Sasakian space-forms. Finally, illustrative examples are given.
U.C. De, Pradip Majhi
doaj   +3 more sources

The local moduli of Sasakian 3-manifolds [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
The Newman-Penrose-Perjes formalism is applied to Sasakian 3-manifolds and the local form of the metric and contact structure is presented. The local moduli space can be parameterised by a single function of two variables and it is shown that, given ...
Brendan S. Guilfoyle
doaj   +2 more sources

Generalized Sasakian Space Forms and Conformal Changes of the Metric

open access: yesResults in Mathematics, 2011
The study of generalized Sasakian space forms is continued in this paper. The behavior of such spaces under generalized D-conformal deformations is analyzed. As a consequence, new examples of generalized Sasakian space forms are given.
Pablo Alegre   +2 more
exaly   +3 more sources

Bounds for Eigenvalues of q-Laplacian on Contact Submanifolds of Sasakian Space Forms [PDF]

open access: yesMathematics, 2023
This study establishes new upper bounds for the mean curvature and constant sectional curvature on Riemannian manifolds for the first positive eigenvalue of the q-Laplacian.
Yanlin Li   +4 more
doaj   +2 more sources

Pinching Results for Submanifolds in Lorentzian–Sasakian Manifolds Endowed with a Semi-Symmetric Non-Metric Connection [PDF]

open access: yesMathematics
We establish an improved Chen inequality involving scalar curvature and mean curvature and geometric inequalities for Casorati curvatures, on slant submanifolds in a Lorentzian–Sasakian space form endowed with a semi-symmetric non-metric connection. Also,
Mohammed Mohammed   +2 more
doaj   +2 more sources

Biharmonic hypersurfaces in Sasakian space forms [PDF]

open access: yesDifferential Geometry and its Applications, 2009
Biharmonic maps \(\phi: (M, g)\longrightarrow (N, h)\) between Riemannian manifolds are the critical points of the bienergy function \[ E_{2}(\phi) = \tfrac{1}{2}\int_{M}|\tau(\phi)|^{2}\nu_{g}, \] where \(\tau(\phi)\) is the tension field of \(\phi\) and \(\nu_{g}\) denotes the volume form. The vanishing of the tension field characterizes the harmonic
Fetcu, D., Oniciuc, C.
openaire   +3 more sources

SOME RESULTS ON A GENERALIZED SASAKIAN-SPACE-FORM ADMITTING TRANS-SASAKIAN STRUCTURE WITH RESPECT TO A GENERALIZED TANAKA WEBSTER OKUMURA CONNECTION [PDF]

open access: yesRomanian Journal of Mathematics and Computer Science, 2015
The object of the present paper is to study generalized Sasakian-spaceforms admitting trans-Sasakian structure with respect to a generalized Tanaka Webster Okumura connection. Locally \phi-symmetric as well as \eta- recurrent generalized Sasakian space-
ALI AKBAR, AVIJIT SARKAR
doaj   +2 more sources

New examples of generalized Sasakian-space-forms [PDF]

open access: yes, 2015
Plan Andaluz de Investigación (Junta de Andalucía)
Carriazo, Alfonso   +3 more
openaire   +7 more sources

η-Einstein Sasakian immersions in non-compact Sasakian space forms [PDF]

open access: yesAnnali di Matematica Pura ed Applicata (1923 -), 2020
The aim of this paper is to study Sasakian immersions of (non-compact) complete regular Sasakian manifolds into the Heisenberg group and into $ \mathbb{B}^N\times \mathbb{R}$ equipped with their standard Sasakian structures. We obtain a complete classification of such manifolds in the $η$-Einstein case.
Gianluca Bande   +2 more
openaire   +4 more sources

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