學(xué)術(shù)報告預(yù)告(主講人:趙育林,時間:11月7日)
作者: 時間:2025-11-06 點擊數(shù):
報告題目: Existence of limit cycles and homoclinic bifurcation in a plant-herbivore model with toxin-determined functional response
報告人:趙育林
報告時間: 2025年11月7日(星期五), 16:50-17:40
報告地點: 廣東技術(shù)師范大學(xué)白云校區(qū)圖書館117室
內(nèi)容摘要:In this paper we study a two-dimensional toxin-determined functional response model (TDFRM). The toxin-determined functional response explicitly takes into consideration the reduction in the consumption of plants by herbivore due to chemical defence, which generates more complex dynamics of the plant-herbivore interactions. The purpose of the present paper is to analyze the existence of limit cycles and bifurcations of the model. By applying the theories of rotated vector fields and the extended planar termination principle, we establish the conditions for the existence of limit cycles and homoclinic loop. It is shown that a limit cycle is generated in a supercritical Hopf bifurcation and terminated in a homoclinic bifurcation, as the parameters vary。
報告人簡介: 趙育林,中山大學(xué)二級教授、博士生導(dǎo)師、數(shù)學(xué)學(xué)院(珠海)院長,廣東省本科高校教學(xué)指導(dǎo)委員會數(shù)學(xué)專業(yè)委會委員,廣東省數(shù)學(xué)會常務(wù)理事,2007入選教育部新世紀優(yōu)秀人才支持計劃。曾先后訪問意大利佛羅倫薩大學(xué)、加拿大Universite des Montreal、York University,以色列Weizmann Institute of Science、巴西圣保羅大學(xué)、美國普渡大學(xué)、法國里爾大學(xué)、西班牙Universitat Autonoma de Barcelona等高校。主要從事常微分方程定性理論和分支理論的研究工作,包括弱化的Hilbert十六問題、周期單調(diào)性、代數(shù)極限環(huán)、高階極限環(huán)分支問題等,已在J. Differential Equation、Nonlinearity、中國科學(xué)(英文版)等期刊上發(fā)表多篇學(xué)術(shù)論文,主持國家自然科學(xué)基金項目6項。
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