研究具有年龄结构三竞争种群系统的适定性.利用不动点定理得到解的存在唯一性,推广了一些文献的工作.
College of Mathematical Science,Tianjin Normal University,Tianjin 300387,China The well posedness of three competing species with age dependence is investigated.By fixed-point theorem,the existence and uniqueness of the solution is proved.The conclusion generalizes some results of relevant literatures.