Hamid Bellout et al 2003 Nonlinearity 16 1967 doi:10.1088/0951-7715/16/6/305
Hamid Bellout1, Said Benachour2 and Edriss S Titi3,4
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The global regularity for the two- and three-dimensional Kuramoto–Sivashinsky equations is one of the major open questions in nonlinear analysis. Inspired by this question, we introduce in this paper a family of hyper-viscous Hamilton–Jacobi-like equations parametrized by the exponent in the nonlinear term, p, where in the case of the usual Hamilton–Jacobi nonlinearity, p = 2. Under certain conditions on the exponent p we prove the short-time existence of weak and strong solutions to this family of equations. We also show the uniqueness of strong solutions. Moreover, we prove the blow-up in finite time of certain solutions to this family of equations when the exponent p>2. Furthermore, we discuss the difference in the formation and structure of the singularity between the viscous and hyper-viscous versions of this type of equation.
02.60.Lj Ordinary and partial differential equations; boundary value problems
70H20 Hamilton-Jacobi equations
Issue 6 (November 2003)
Received 19 September 2002, in final form 18 June 2003
Published 22 August 2003
Hamid Bellout et al 2003 Nonlinearity 16 1967
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