Generic lightlike submanifolds of an indefinite trans-Sasakian manifold of a quasi-constant curvature

2015 ◽  
Vol 9 ◽  
pp. 2985-2997
Author(s):  
Dae Ho Jin
Keyword(s):  
Constant Curvature ◽  
Sasakian Manifold ◽  
Lightlike Submanifolds

scholarly journals Some remarks on invariant lightlike submanifolds of indefinite Sasakian manifold

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Samuel Ssekajja
Keyword(s):  
Constant Curvature ◽  
Sasakian Manifold ◽  
Sasakian Space Form ◽  
Spaces Of Constant Curvature ◽  
Content Type ◽  
Geometric Conditions ◽  
Reference Number ◽  
Space Of Constant Curvature ◽  
Lightlike Submanifolds ◽  
Lightlike Submanifold

PurposeThe author considers an invariant lightlike submanifold M, whose transversal bundle tr(TM) is flat, in an indefinite Sasakian manifold M¯(c) of constant φ¯-sectional curvature c. Under some geometric conditions, the author demonstrates that c=1, that is, M¯ is a space of constant curvature 1. Moreover, M and any leaf M′ of its screen distribution S(TM) are, also, spaces of constant curvature 1.Design/methodology/approachThe author has employed the techniques developed by K. L. Duggal and A. Bejancu of reference number 7.FindingsThe author has discovered that any totally umbilic invariant ligtlike submanifold, whose transversal bundle is flat, in an indefinite Sasakian space form is, in fact, a space of constant curvature 1 (see Theorem 4.4).Originality/valueTo the best of the author’s findings, at the time of submission of this paper, the results reported are new and interesting as far as lightlike geometry is concerned.

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