Geodesic
Nonlinear potentials, local solutions to elliptic equations and rearrangements
Cianchi, Andrea1
1 Dipartimento di Matematica “U. Dini” Università di Firenze Piazza Ghiberti, 27 50122 Firenze, Italia
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 5, Tome 10 (2011) no. 2, pp. 335-361

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A sharp rearrangement estimate for the nonlinear Havin-Maz’ya potentials is established. In particular, this estimate leads to a characterization of those rearrangement invariant spaces between which the nonlinear potentials are bounded. In combination with results from [24] and [18], it also enables us to derive local bounds for solutions to quasilinear elliptic PDE’s and for their gradient in rearrangement form. As a consequence, the local regularity of solutions to elliptic equations and for their gradient in arbitrary rearrangement invariant spaces is reduced to one-dimensional Hardy-type inequalities. Applications to the special cases of Lorentz and Orlicz spaces are presented.

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Classification : 31C15, 35B45

Cianchi, Andrea 1

1 Dipartimento di Matematica “U. Dini” Università di Firenze Piazza Ghiberti, 27 50122 Firenze, Italia 
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     title = {Nonlinear potentials, local solutions to elliptic equations and rearrangements},
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Cianchi, Andrea. Nonlinear potentials, local solutions to elliptic equations and rearrangements. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 5, Tome 10 (2011) no. 2, pp. 335-361. http://geodesic.mathdoc.fr/item/ASNSP_2011_5_10_2_335_0/