On the Center Conditions of Certain Fifth Systems
L. I. Jingyi · Asian Research Journal of Mathematics · 2018
There are two basic problems in the qualitative theory of planar nonlinear differential equations, namely the center focus and the limit cycle. The decision problem of the center focus is also the premise and foundation of the study on the limit cycle. Therefore, the study of the...
Open access
Research Article
10.9734/ARJOM/2018/43884