Abstract

Extremities Involving B. Y. Chen’s Invariants for Real Hypersurfaces in Complex Quadric

Highlights

  • Afterwards, many papers have been appeared in submanifolds of space forms in the version of real and complex like, generalised complex space forms [11], (k, μ)-contact space forms [1] and Sasakian space forms [13]

  • The classifications of real hypersurface of the complex quadric with isometric Reeb flow were obtained by Berndt and Suh [5] and many more work have been studied by different authors considering the same ambient space ([2]-[4],[19])

  • We establish an inequality in terms of the warping function and the scalar curvature for warped product real hypersurface of Qm and some obstructions have been given

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Summary

Introduction

Chen found some obstructions to Chern’s problem and proposed inequalities for submanifolds in Riemannian space form concerning the sectional curvature, the scalar curvature and the squared mean curvature [9]. J. Suh, obtained some analyzing results on real hypersurfaces in the complex quadric by considering some geometric conditions like parallel Ricci tensor [17], Reeb parallel shape operator [18]. The classifications of real hypersurface of the complex quadric with isometric Reeb flow were obtained by Berndt and Suh [5] and many more work have been studied by different authors considering the same ambient space ([2]-[4],[19]). We first establish Chen’s extremities for real hypersurfaces of the complex quadric Qm and considering the equality case, we obtain some consequences. By virtue of simpleness, throughout a paper we denote semi-symmetric metric connection, LeviCivita connection and Warped product by SSMC, LC connection and WP, respectively

The complex quadric Qm
WP real hypersurface of Qm
Curvature tensor of real hypersurface M in Qm admitting SSMC
Chen’s inequality for a real hypersurface M of Qm with SSMC
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