Speaker:Jin Jiayin, Postdoctor, School of Mathematics, Georgia Institute of Technology, US
Date:June 19, 2017
Time:9:00 am
Location:Room 1032, Block B, Zhixin Building, Central Campus
Sponsor:the School of Mathematics
Abstract:
We classify the local dynamics near solitary waves of the supercritical gKDV equations. We proved that there exists a co-dimensional one center-stable (unstable) manifold, such that if the initial data is not on the center-stable (un-stable) manifold then the corresponding forward (backward) flow will be ejected away from the solitons exponentially fast; There exists a co-dimensional two center manifold, such that if the initial data is not on the center manifold, then the flow will get away from the solitons exponentially fast either in positive time or in negative time. Moreover, we show the orbital stability of the solitons on the center manifold, which also implies the global existence of the solutions on the center manifold and the local uniqueness of the center manifolds. Further-more, applying a theorem of Martel and Merle, we have that the solitons are asymptotically stable on the center manifold in some local sense. This is a joint work with Zhiwu Lin and Chongchun Zeng.
Bio:
Jin Jiayi is currently a Hale Postdoc in the School of Mathematics at Georgia Institute of Technology under the mentorship of Dr. Chongchun Zeng and Dr. Zhiwu Lin. He completed his Ph.D. in Mathematics from Michigan State University in 2015 under the direction of Professor Peter Bates. His main research interests include Partial Differential Equations and Dynamical Systems.
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Edited by: Shi Yajie