Commun. Korean Math. Soc. 2003; 18(1): 75-85
Printed March 1, 2003
Copyright © The Korean Mathematical Society.
Seong-Baek Lee
Chosun University
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
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