拓扑度定理
He paper gives out a theorem about the calculation of topological degree by using the fact that the radical set is contractible, and gets some fixed point theorems of the condensed mapping on the radical set.
利用放射集是可缩的这一事实给出了凝聚场拓扑度计算的一个定理,进而在放射集上得到了凝聚映射的一些不动点定理。
In this paper, by using the extended theorem of the theory of topological degree, a sufficient con-dition is obtained for the existence of a positive periodic solution to Rosenzweig-Macarthur model.
本文利用拓扑度理论中的拓展定理,得到Rosenzweig-Macarthur模型的正周期解存在的充分条件。
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