Communications of the
Korean Mathematical Society
CKMS

ISSN(Print) 1225-1763 ISSN(Online) 2234-3024

Article

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Commun. Korean Math. Soc. 2003; 18(1): 75-85

Printed March 1, 2003

Copyright © The Korean Mathematical Society.

On a Semi-invariant submanifold of codimension $3$ with constant mean curvature in a complex projective space

Seong-Baek Lee

Chosun University

Abstract

Let $M$ be a semi-invariant submanifold of codimension $3$ with lift-flat normal connection in a complex projective space. Further, if the mean curvature of $M$ is constant, then we prove that $M$ is a real hypersurface of a complex projective space of codimension $2$ in the ambient space.

Keywords: semi-invariant submanifold, lift-flat normal connection, mean curvature, real hypersurface

MSC numbers: 53C25, 53C40, 53C42