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Perte de régularité pour les équations d’ondes sur-critiques

Gilles Lebeau (2005)

Bulletin de la Société Mathématique de France

On prouve que le problème de Cauchy local pour l’équation d’onde sur-critique dans d , u + u p = 0 , p impair, avec d 3 et p > ( d + 2 ) / ( d - 2 ) , est mal posé dans H σ pour tout σ ] 1 , σ crit [ , où σ crit = d / 2 - 2 / ( p - 1 ) est l’exposant critique.

Prox-regularization and solution of ill-posed elliptic variational inequalities

Alexander Kaplan, Rainer Tichatschke (1997)

Applications of Mathematics

In this paper new methods for solving elliptic variational inequalities with weakly coercive operators are considered. The use of the iterative prox-regularization coupled with a successive discretization of the variational inequality by means of a finite element method ensures well-posedness of the auxiliary problems and strong convergence of their approximate solutions to a solution of the original problem. In particular, regularization on the kernel of the differential operator and regularization...

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