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REMARKS OF GLOBAL WELLPOSEDNESS OF LIQUID CRYSTAL FLOWS AND HEAT FLOWS OF HARMONIC MAPS IN TWO DIMENSIONS
Journal article   Open access   Peer reviewed

REMARKS OF GLOBAL WELLPOSEDNESS OF LIQUID CRYSTAL FLOWS AND HEAT FLOWS OF HARMONIC MAPS IN TWO DIMENSIONS

Zhen Lei, Dong Li and Xiaoyi Zhang
Proceedings of the American Mathematical Society, Vol.142(11), pp.3801-3810
11/01/2014
DOI: 10.1090/S0002-9939-2014-12057-0
url
https://doi.org/10.1090/S0002-9939-2014-12057-0View
Published (Version of record) Open Access

Abstract

We consider the Cauchy problem to the two-dimensional incompressible liquid crystal equation and the heat flows of the harmonic maps equation. Under a natural geometric angle condition, we give a new proof of the global wellposedness of smooth solutions for a class of large initial data in energy space. This result was originally obtained by Ding-Lin and Lin-Lin-Wang. Our main technical tool is a rigidity theorem which gives the coercivity of the harmonic energy under a certain angle condition. Our proof is based on a frequency localization argument combined with the concentration-compactness approach which can be of independent interest.
Mathematics Physical Sciences Mathematics, Applied Science & Technology

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