We consider weak solutions of the differential inequality of p-Laplacian type -(p)u - f(u) <= - Delta(p)v - f(v) such that u <= v on a smooth bounded domain in RN and either u or v is a weak solution of the corresponding Dirichlet problem with zero boundary condition. Assuming that u < v on the boundary of the domain we prove that u < v, and assuming that u equivalent to v equivalent to 0 on the boundary of the domain we prove u < v unless u equivalent to v. The novelty is that the nonlinearity f is allowed to change sign. In particular, the result holds for the model nonlinearity f(s) = s(q) - lambda s(p-1) with q > p - 1.

Roselli, P., & Sciunzi, B. (2007). A strong comparison principle for the p-laplacian. PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, 135(10), 3217-3224 [10.1090/S0002-9939-07-08847-8].

A strong comparison principle for the p-laplacian

ROSELLI, PAOLO;
2007

Abstract

We consider weak solutions of the differential inequality of p-Laplacian type -(p)u - f(u) <= - Delta(p)v - f(v) such that u <= v on a smooth bounded domain in RN and either u or v is a weak solution of the corresponding Dirichlet problem with zero boundary condition. Assuming that u < v on the boundary of the domain we prove that u < v, and assuming that u equivalent to v equivalent to 0 on the boundary of the domain we prove u < v unless u equivalent to v. The novelty is that the nonlinearity f is allowed to change sign. In particular, the result holds for the model nonlinearity f(s) = s(q) - lambda s(p-1) with q > p - 1.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore MAT/05 - Analisi Matematica
eng
p-laplace operator; geometric and qualitative properties of the solutions; comparison principle
http://cat.inist.fr/?aModele=afficheN&cpsidt=19082398
Roselli, P., & Sciunzi, B. (2007). A strong comparison principle for the p-laplacian. PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, 135(10), 3217-3224 [10.1090/S0002-9939-07-08847-8].
Roselli, P; Sciunzi, B
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/34717
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