Four Positive Periodic Solutions of a Discrete Time Lotka-volterra Competitive System with Harvesting Terms

@inproceedings{Liu2012FourPP,
  title={Four Positive Periodic Solutions of a Discrete Time Lotka-volterra Competitive System with Harvesting Terms},
  author={Xinggui Liu and Yaping Ren and Yongkun Li},
  year={2012}
}
In this paper, by using Mawhin’s continuation theorem of coincidence degree theory, we establish the existence of at least four positive periodic solutions for a discrete time Lotka-Volterra competitive system with harvesting terms. An example is given to illustrate the effectiveness of our results.