On sectional and Ricci curvatures of semi-Riemannian submersions

Kodai Mathematical Journal

Young Jin Suh¹  Jung-Hwan Kwon¹ 

关键词: spectral;    harmonic map;    HPn;   

DOI  :  10.2996/kmj/1138043720

学科分类：数学（综合）

来源: Tokyo Institute of Technology, Department of Mathematics

【 摘 要 】

References(11)O'Neill introduced a notion of Riemannian submersion [7]. In this paper we give a new notion of semi-Riemannian submersion and want to investigate some geometric properties concerned with sectional and Ricci curvatures of this submersion.

【 授权许可】

Unknown