主講人：沈建和 福建師范大學(xué)教授

時(shí)間：2022年6月6日14：00

地點(diǎn)：騰訊會(huì)議 220 119 748

舉辦單位：數(shù)理學(xué)院

主講人介紹：沈建和，教授、博士生導(dǎo)師，目前就職于福建師范大學(xué)數(shù)學(xué)與統(tǒng)計(jì)學(xué)院；兼任美國(guó)《數(shù)學(xué)評(píng)論》和德國(guó)《數(shù)學(xué)文摘》評(píng)論員、中國(guó)數(shù)學(xué)會(huì)奇異攝動(dòng)專(zhuān)業(yè)委員會(huì)副主任委員等；研究方向?yàn)槠娈悢z動(dòng)理論及應(yīng)用；已在《Philosophical Transactions of the Royal Society A》《Physica D: Nonlinear Phenomenon》《Journal of Dynamics and Differential Equations》《Discrete and Continuous Dynamical Systems》《Discrete and Continuous Dynamical Systems-B》等雜志發(fā)表論文約 30 篇；（曾）主持國(guó)家自然科學(xué)基金面上項(xiàng)目和青年項(xiàng)目、中國(guó)博士后科學(xué)基金、福建省自然科學(xué)基金面上項(xiàng)目等。

內(nèi)容介紹：In this talk we will introduce the birth of periodic solutions and some associated bifurcation mechamisms in singular perturbation systems.Based on geometric singular perturbation theory (GSPT) and bifurcation theory, a variety of rich and interesting dynamics, including the birth of relaxation oscillations, mixed-mode oscillations (MMOs), canard explosion and bistability can be observed in singular perturbation systems with two or three-timescale.