A Condition to the Existence of Periodic-3 Orbit and Implication of Chaos in a Kind of Roseneweig - Macorthur Discrete System
A condition to the existence of periodic-3 orbit and implication of chaos in a kind of Roseneweig-Macorthur discrete system is presented in the paper, and it's proven in this condition, the periodic-3 orbit of Roseneweig-Macorthur discrete system is not unique, and such researches will have important ecological significances on the prediction of ecological environment.