Various concepts of invariant monotone vector fields on Riemannian manifolds are introduced. Some examples of invariant monotone vector fields are given. Several notions of invexities for functions on Riemannian manifolds are defined and their relations with invariant monotone vector fields are stud
Cohomogeneity one Riemannian manifolds and Killing fields
✍ Scribed by Fabio Podestà
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 557 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0926-2245
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✦ Synopsis
This paper is devoted to the study of isometries of cohomogeneity one Riemannian spaces, namely Riemannian manifolds acted on by a Lie group of isometries G with principal ort';ts of codimension one. We show that, for a class of such manifolds, every one parameter group of isometrics preserves the foliation induced by the action of the Lie group G.
📜 SIMILAR VOLUMES
In this paper, we look for metrics of cohomogeneity one in D = 8 and D = 7 dimensions with Spin(7) and G 2 holonomy, respectively. In D = 8, we first consider the case of principal orbits that are S 7 , viewed as an S 3 bundle over S 4 with triaxial squashing of the S 3 fibres. This gives a more gen