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On the property of for a second-order system with zero diagonal coefficient
A. Aghajani , V. Roomi ,
Volume 18, Issue 1 (International Journal of Engineering 2007)
Abstract

Abstract: This paper investigates the problem of whether all trajectories of the system and cross the vertical isocline, which is very important for the existence of periodic solutions and oscillation theory. Sufficient conditions are given for all trajectories to cross the vertical isocline.

 


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