Journals
Publish with us
Publishing partnerships
About us
Blog
Advances in Mathematical Physics
Journal overview
For authors
For reviewers
For editors
Table of Contents
Special Issues
Advances in Mathematical Physics
/
2015
/
Article
/
Fig 2
/
Research Article
Existence of Center for Planar Differential Systems with Impulsive Perturbations
Figure 2
The focus of system (
57a
) and (
57b
). (a) A stable focus, where
. (b) An unstable focus, where
. (c) An unstable focus, where
.
(a)
(b)
(c)