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Well-posedness, blow-up phenomena, and global solutions for the b-equation

  • Joachim Escher und Zhaoyang Yin
Veröffentlicht/Copyright: 29. Oktober 2008
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Journal für die reine und angewandte Mathematik
Aus der Zeitschrift Band 2008 Heft 624

Abstract

In the paper we first establish the local well-posedness for a family of nonlinear dispersive equations, the so called b-equation. Then we describe the precise blow-up scenario. Moreover, we prove that for the b-equation we do have the coexistence of global in time solutions and blow-up phenomena: Depending on the initial data solutions may exist for ever, while other data force the solution to produce a singularity in finite time. Finally, we prove the uniqueness and existence of global weak solution to the equation provided the initial data satisfy certain sign conditions.

Received: 2007-03-14
Revised: 2007-07-13
Published Online: 2008-10-29
Published in Print: 2008-November

© Walter de Gruyter Berlin · New York 2008

Heruntergeladen am 29.9.2025 von https://www.degruyterbrill.com/document/doi/10.1515/CRELLE.2008.080/html
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