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 A new characterization of ruled real hypersurfaces in complex space forms Bull. Korean Math. Soc. 1999 Vol. 36, No. 3, 513-532 Seong Soo Ahn, Young Suk Choi, and Young Jin Suh Dongshin University, Kyungpook National University, Kyungpook National University Abstract : The purpose of this paper is to give another new characterization of ruled real hypersurfaces in a complex space form $M_n(c)$,$\ c{\not =}0$ in terms of the covariant derivative of its Weingarten map in the direction of the structure vector $\xi$. Keywords : ruled real hypersurfaces, the covariant derivative, Weingarten map MSC numbers : Primary 53C40; Secondary 53C15 Downloads: Full-text PDF