Classification of Casorati ideal Legendrian submanifolds in Sasakian space forms II

0101 mathematics 01 natural sciences
DOI: 10.1016/j.geomphys.2021.104410 Publication Date: 2021-10-22T22:07:04Z
ABSTRACT
Abstract In the first part of this paper, using an optimization method on Riemannian submanifolds, we prove that for any Legendrian submanifold of a Sasakian space form M 2 n + 1 ( c ) of constant ϕ -sectional curvature c , we have two sharp inequalities relating some basic extrinsic and intrinsic invariants of the immersion, namely the ϕ -sectional curvature, the normalized scalar curvature, the mean curvature and the δ -Casorati curvatures. In the second part, we classify the family of Casorati ideal Legendrian submanifolds in a Sasakian space form and provide examples supporting the main results of the paper.
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