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一类带有分数型交错扩散的捕食-食饵模型的多解性研究 被引量:3

The Multiplicity of Positive Solutions to a Predator-Prey Model with Cross-Diffusion of Fractional Type
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摘要 研究了一类具有分数型交错扩散的捕食-食饵模型.此模型用于描述种群栖息地的分化现象.通过分析该模型的线性化问题的特征值问题,并利用分支理论和拓扑度理论研究了该模型的正平衡态解的性质,并得到了正平衡态解的多重性条件,此结论推广并完善了已有的结果. In this article,we consider a predator-prey model with cross-diffusion of fractional type,which is used to investigate the habitat segregation phenomenon between two species.By analyzing the eigenvalue problem of the linearized system and using the degree theory and the bifurcation theory,we study the properties of the positive solutions to the model and obtain the multiplicity of the positive solutions,which promote and improve the existing results.
作者 罗丽容 周军
出处 《西南大学学报(自然科学版)》 CAS CSCD 北大核心 2017年第3期108-114,共7页 Journal of Southwest University(Natural Science Edition)
基金 国家自然科学基金项目(11201380) 中国博士后基金一等项目(2014M550453) 中国博士后基金特别项目(2015T80948) 中央高校基本科研业务费重大项目(XDJK2015A16)
关键词 分数型交错扩散 捕食-食饵模型 正解 多重性 cross-diffusion of fractional type predator-prey model positive solution multiplicity
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