# American Institute of Mathematical Sciences

January  2009, 11(1): 31-42. doi: 10.3934/dcdsb.2009.11.31

## A nonlinear interpolation result with application to the summability of minima of some integral functionals

 1 Dipartimento di Matematica, Università di Roma 1, Piazza A. Moro 2, 00185 Roma 2 Dip. Metodi e Modelli Matematici per le Scienze Applicate, Univ. Roma 1, Via Antonio Scarpa 16, 00161 Roma, Italy

Received  January 2008 Revised  April 2008 Published  November 2008

We shall prove results asserting the (global) $L^s$-summability of the minima of integral functionals, using the classical structural assumptions. A feature of the method is that it depends not so much on the minimization problem but rather on the "control from below'' of the structural assumptions. Then the proof concerning the summability of the minima of integral functionals can be easily adapted in order to prove the summability of solutions of nonlinear elliptic equations (even when they are not Euler equations of functionals).
Citation: Lucio Boccardo, Daniela Giachetti. A nonlinear interpolation result with application to the summability of minima of some integral functionals. Discrete and Continuous Dynamical Systems - B, 2009, 11 (1) : 31-42. doi: 10.3934/dcdsb.2009.11.31
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