On finite energy solutions for nonhomogeneous $p$-harmonic equations
D'Onofrio, Luigi ; Moscariello, Gioconda
Funct. Approx. Comment. Math., Tome 40 (2009) no. 1, p. 139-150 / Harvested from Project Euclid
Let $\Omega$ be an open subset of $\mathbb{R}^{n}$, we establish regularity results for solutions of some degenerate nonhomogeneous equations of the type $${\rm div}\langle {A}(x)Du,Du\rangle^{\frac{p-2}{2}}{ A}(x)Du={\rm div} F{\rm in} \Omega$$ where $p\ge 2$. The nonnegative function $\mathcal K(x)$, which measures the degree of degeneracy of ellipticity bounds, lies in the exponential class, i.e. $\mathrm {exp}(\lambda \mathcal K(x))$ is integrable for some $\lambda>0$. Under this assumption, the gradient of a finite energy solution of (1) lies in the Orlicz-Zygmund class $L^{p}\log^{-1}L(\Omega)$. Our results states that the gradient of such solution is more regular provided $\lambda$ is sufficiently large and the datum $F=F(x)$ belongs to a suitable Orlicz-Zygmund class.
Publié le : 2009-03-15
Classification:  Elliptic Equations,  Mappings with Finite Distortion,  Orlicz-Zygmund classes,  35B45,  35J60,  30C65
@article{1238418804,
     author = {D'Onofrio, Luigi and Moscariello, Gioconda},
     title = {On finite energy solutions for nonhomogeneous $p$-harmonic equations},
     journal = {Funct. Approx. Comment. Math.},
     volume = {40},
     number = {1},
     year = {2009},
     pages = { 139-150},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1238418804}
}
D'Onofrio, Luigi; Moscariello, Gioconda. On finite energy solutions for nonhomogeneous $p$-harmonic equations. Funct. Approx. Comment. Math., Tome 40 (2009) no. 1, pp.  139-150. http://gdmltest.u-ga.fr/item/1238418804/