PROJECTIVELY FLAT WARPED PRODUCT RIEMANNIAN MANIFOLDS

  • Oh, Won-Tae (Department of Mathematics, Chungbuk National University) ;
  • Shin, Seung-Soo (Department of Mathematics, Chungbuk National University)
  • Published : 2000.09.01

Abstract

We investigate the projectively flat warped product manifolds and study the geometric structure of the base space and its fibre. Specifically we find the conditions that the scalar curvature of the base space (B,g) vanishes if and only if f is harmonic on (B,g) and the fibre (F,$\bar{g}$) is a space of constant curvature.

Keywords

References

  1. Semi-Riemannain geometry with application to relativity B. O'Neil
  2. Geometry of submanifold B. Y. Chen
  3. Proc. Japan Acad. v.71 Warped products with critical Riemannian metric B. H. Kim
  4. Trans. Amer. Math. Soc. v.145 Manifolds of negative curvature R. L. Bishop;B. O'Neil
  5. Soochow J. Math. v.5 Totally umbilical submanifolds B. Y. Chen
  6. Einstein manifolds A. Besse