Michael Struwe

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We survey existence and regularity results for semi-linear wave equations. In particular, we review the recent regularity results for the u5-Klein Gordon equation by Grillakis and this author and give a self-contained, slightly simplified proof.
Chiun-Chuan Chen1, Robert M. Strain2, Horng-Tzer Yau2, and Tai-Peng Tsai3 1Department of Mathematics and Taida Institute of Mathematical Sciences, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan 106 and National Center for Theoretical Sciences, Taiwan, Taipei Office. 2Department of Mathematics, Harvard University, One Oxford(More)
We analyze the possible concentration behavior of heat flows related to the Moser-Trudinger energy and derive quantization results completely analogous to the quantization results for solutions of the corresponding elliptic equation. As an application of our results we obtain the existence of critical points of the Moser-Trudinger energy in a supercritical(More)
. Die Sicherheit von elektronischen Daten und deren Übermittlung beruht heutzutage auf ausgeklügelten kryptographischen Methoden, die z.B. im e-Banking Verwendung finden. Im gleichen Maße, wie immer sicherere mathematische Methoden entwickelt wurden, um vertrauliche elektronische Kommunikation zu schützen, sind auch immer raffiniertere Techniken entstanden,(More)