On a Riemannian invariant of Chen type

Details On a Riemannian invariant of Chen type On a Riemannian invariant of Chen type

2006-05-12

arxiv.org/abs/math/0605321v1

Mathematics

Differential Geometry

The paper is submitted to Rocky Mountain Journal of Mathematics

Scientific paper

In [6] we proved Chen's inequality regarded as a problem of constrained maximum. In this paper we introduce a Riemannian invariant obtained from Chen's invariant, replacing the sectional curvature by the Ricci curvature of k-order. This invariant can be estimated, in the case of submanifolds M in space forms $\widetilde{M}(c)$, varying with c and the mean curvature of M in $\widetilde{M}(c)$. A improuvement of this inequality in the Lagrangian case is obtained.

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