1.
An Acad Bras Cienc
; 79(1): 1-11, 2007 Mar.
Article
in English
| MEDLINE
| ID: mdl-17401468
ABSTRACT
In Kupka et al. 2006 appears the Focal Stability Conjecture: the focal decomposition of the generic Riemann structure on a manifold M is stable under perturbations of the Riemann structure. In this paper, we prove the conjecture when M has dimension two, and there are no conjugate points.
