Electron. J. Diff. Eqns., Vol. 2002(2002), No. 63, pp. 1-28.

Robust exponential attractors for singularly perturbed phase-field type equations

Alain Miranville & Sergey Zelik

Abstract:
In this article, we construct robust (i.e. lower and upper semicontinuous) exponential attractors for singularly perturbed phase-field type equations. Moreover, we obtain estimates for the symmetric distance between these exponential attractors and that of the limit Cahn-Hilliard equation in terms of the perturbation parameter. We can note that the continuity is obtained without time shifts as it is the case in previous results.

Submitted April 18, 2002. Published July 4, 2002.
Math Subject Classifications: 35B40, 35B45.
Key Words: Phase-field equations, exponential attractors, upper and lower semicontinuity.

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Alain Miranville
Laboratoire d'Applications des Mathematiques - SP2MI
Boulevard Marie et Pierre Curie - Teleport 2
86962 Chasseneuil Futuroscope Cedex - France
e-mail: miranv@mathlabo.univ-poitiers.fr

Sergey Zelik
Laboratoire d'Applications des Mathematiques - SP2MI
Boulevard Marie et Pierre Curie - Teleport 2
86962 Chasseneuil Futuroscope Cedex - France
e-mail: zelik@mathlabo.univ-poitiers.fr


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