Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4605971 | Differential Geometry and its Applications | 2014 | 20 Pages |
Abstract
We prove that in the case of an isometric action α:GÃMâM of a Lie group G on a semi-Riemannian manifold M the union of the maximal dimensional orbits is an open and dense set in M. Moreover, if M is a Lorentz manifold and α is an isometric action on it, then in the set of the maximal dimensional orbits local stability and normalizability are equivalent, and there is no open invariant set UâM such that all the orbits G(x)âU are non-normalizable and have the same infinitesimal type. These results are useful in the extension of the principal orbit type theorem.
Related Topics
Physical Sciences and Engineering
Mathematics
Analysis
Authors
D. Szeghy,