應(yīng)yl7703永利官網(wǎng)孫春友教授邀請,南方科技大學(xué)數(shù)學(xué)系王曉明教授將于2019年6月30日至7月6日訪問我校并作報告。
報告題目:Approximating long-time statistical properties of infinite dimensional dissipative dynamical systems
時 間:2019年7月3日上午9: 00
地 點:蘭州大學(xué)醫(yī)學(xué)校區(qū)明道樓報告廳
報告摘要:It is well-known that physical laws for large chaotic dynamical systems are evealed statistically. The main concern of this talk is numerical methods for issipative chaotic infinite dimensional dynamical systems that are able to capture the stationary statistical properties of the underlying dynamical systems. We first survey results on temporal and spatial approximations that enjoy the desired properties. We then present a new result on fully discretized approximations of infinite dimensional dissipative chaotic dynamical systems that are able to capture asymptotically the stationary statistical properties. The main ingredients in ensuring the convergence of the long time statistical properties of the numerical schemes are: (1) uniform dissipativity of the scheme in the sense that the union of the global attractors of the numerical approximations is pre-compact in the phase space; (2) convergence of the solutions of the numerical scheme to the solution of the continuous system on the unit time interval [0, 1] modulo an initial layer, uniformly with respect to initial data from the union of the global attractors. The two conditions are reminiscent of the Lax equivalence theorem where stability and consistency are needed for the convergence of a numerical scheme.
王曉明教授簡介
王曉明教授畢業(yè)于復(fù)旦大學(xué),1996年獲得美國印第安那大學(xué)布魯明頓分校博士學(xué)位。隨后兩年,在紐約大學(xué)著名的庫朗研究所從事博士后研究(庫朗講師);1998年加入愛荷華州立大學(xué)數(shù)學(xué)系,2001年晉升為副教授并獲終身教職;2002年先后在庫朗研究所和普林斯頓高等研究院擔(dān)任研究員;2003年受邀加盟佛羅里達州立大學(xué),任終身教授,2006晉升為正教授。在佛羅里達州立大學(xué)任職期間,擔(dān)任應(yīng)用和計算數(shù)學(xué)主任(2009-2012)和數(shù)學(xué)系系主任(2012-2017)。2017年受邀加盟母校復(fù)旦大學(xué),任特聘教授;2018年加盟南科大,現(xiàn)任數(shù)學(xué)系系主任、講席教授。王曉明教授的研究重點是應(yīng)用和計算數(shù)學(xué),尤其是與氣候變化和地下水研究有關(guān)的數(shù)學(xué)問題。他的工作的一個顯著特點是嚴謹?shù)臄?shù)學(xué)和真實應(yīng)用的有機結(jié)合。已在劍橋大學(xué)出版社出版專著一本,在CPAM等世界一流雜志發(fā)表學(xué)術(shù)論文80余篇。
歡迎屆時參加!
甘肅省應(yīng)用數(shù)學(xué)與復(fù)雜系統(tǒng)省級重點實驗室
yl7703永利官網(wǎng)
萃英學(xué)院
2019年7月2日