报告人:蒋卫华
报告地点:MK官方APP下载104教室
报告时间:2023年11月26日星期日10:30-11:30
邀请人:范猛
报告摘要:
In this talk, taking the diffusive Holling-Tanner predator-prey model with no-flux boundary conditions as an example, we report some of our recent work on PFDE bifurcation studies. First,we show that the coexistence equilibrium can lose its stability through not only codimension one Turing (Hopf) bifurcation, but also codimension two Turing-Hopf, Turing- Turing, Double Hopf and Bogdanov-Takens bifurcations, etc. Then, some explicit formulas for the coefficients of normal forms for Turing-Hopf,double Hopf and Bogdanov-Takens bifurcations of some PFDEs are presented concisely. Finally, some spatiotemporal patterns are theoretically predicted and shown numerically.
主讲人简介:
蒋卫华,哈尔滨工业大学教授,博士生导师。黑龙江省工业与应用数学学会常务理事,美国数学会《Math.Review》评论员。 主要从事泛函微分方程和偏泛函微分方程的分支理论及应用的研究,在规范型的公式化以及从高余维分支研究角度揭示复杂模式的存在性和稳定性方面有一些特色工作。主持和参与多项国家自然科学基金及省部级基金项目,研究工作主要发表在国内外诸如科学通报,JDE, IMA J. Appl. Math.,DCDS, SAPM, JDDE,Physica D,DCDS B,Nonlinear Analysis,Nonlinear Anal. RWA 和J. Math. Anal. Appl. 等重要学术期刊上,出版专著一部。