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AGHAJANI, A. RADULESCU, V.
Original Title
Positive supersolutions of non-autonomous quasilinear elliptic equations with mixed reaction
Type
journal article in Web of Science
Language
English
Original Abstract
We provide a simple method for obtaining new Liouville-type theorems for positive supersolutions of the We We provide a simple method for obtaining new Liouville-type theorems for positive supersolutions of the elliptic problem - Delta(p)u+ b(x)vertical bar del u vertical bar(pq/q+1) = c(x)u(q) in Omega, where Omega is an exterior domain in R-N with N >= p > 1 and q >= p - 1. In the case q not equal p - 1, we mainly deal with potentials of the type b(x) = vertical bar x vertical bar(a), c(x) = lambda vertical bar x vertical bar(sigma), where lambda > 0 and a, sigma is an element of R. We show that positive supersolutions do not exist in some ranges of the parameters p, q, a, sigma, which turn out to be optimal. When q = p - 1, we consider the above problem with general weights b(x) >= 0, c(x) > 0 and we assume that c(x)- b(p)(x)/p(p) > 0 for large vertical bar x vertical bar, but we also allow the case lim(vertical bar x vertical bar ->infinity)[c(x)- b(p)(x)/p(p)] = 0. The weights b and c are allowed to be unbounded. We prove that if this equation has a positive supersolution, then the potentials must satisfy a related differential inequality not depending on the supersolution. We also establish sufficient conditions for the nonexistence of positive supersolutions in relationship with the values of tau := lim sup(vertical bar x vertical bar ->infinity) vertical bar x vertical bar b(x) <= infinity. A key ingredient in the proofs is a generalized Hardy-type inequality associated to the p-Laplace operator.
Keywords
Nonlinear elliptic equation;Liouville theorem;super solution;convection term
Authors
AGHAJANI, A.; RADULESCU, V.
Released
27. 10. 2023
Publisher
Association des Annales de l'Institut Fourier
ISBN
1777-5310
Periodical
ANNALES DE L INSTITUT FOURIER
Year of study
73
Number
6
State
French Republic
Pages from
2543
Pages to
2566
Pages count
24
URL
https://aif.centre-mersenne.org/articles/10.5802/aif.3576/
Full text in the Digital Library
http://hdl.handle.net/11012/245083
BibTex
@article{BUT187372, author="Asodallah {Aghajani} and Vicentiu {Radulescu}", title="Positive supersolutions of non-autonomous quasilinear elliptic equations with mixed reaction", journal="ANNALES DE L INSTITUT FOURIER", year="2023", volume="73", number="6", pages="2543--2566", doi="10.5802/aif.3576", issn="1777-5310", url="https://aif.centre-mersenne.org/articles/10.5802/aif.3576/" }