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SMOOTH SOLUTIONS FOR A CLASS OF NONLINEAR PARABOLIC EVOLUTION EQUATIONS

Published online by Cambridge University Press:  01 February 2000

MARKUS POPPENBERG
Affiliation:
Fachbereich Mathematik, Universität Dortmund, D-44221 Dortmund, Germany; [email protected]
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Abstract

The purpose of the paper is to introduce a new linearization method for local well-posedness of nonlinear evolution equations. This approach is based on an implicit function theorem of Nash–Moser type. The technique is illustrated by an application to a general class of fully nonlinear parabolic partial differential equations of arbitrary order on ℝn. The estimates required by the Nash–Moser technique are derived for the higher order Sobolev norms of the solutions of the linearized parabolic equation using semigroup theory and elliptic theory. In particular, a priori estimates, resolvent estimates and commutator estimates are involved. The general method based on a combination of Nash–Moser techniques with semigroup theory is applicable to other problems and has already been used to prove short-time solvability for some nonlinear Schrödinger type equation. This approach might be useful in other situations as well since it compensates for a loss of derivatives in the estimates of the solutions of the linearized equation.

Type
Notes and Papers
Copyright
The London Mathematical Society 2000

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