Extremal constant sign solutions and nodal solutions for the fractional p-Laplacian

被引:14
|
作者
Frassu, Silvia [1 ]
Iannizzotto, Antonio [1 ]
机构
[1] Univ Cagliari, Dept Math & Comp Sci, Via Osped 72, I-09124 Cagliari, Italy
关键词
Fractional p-Laplacian; Extremal constant sign solutions; Nodal solutions; Critical point theory; NONLINEAR EQUATIONS; DIRICHLET PROBLEM; REGULARITY;
D O I
10.1016/j.jmaa.2020.124205
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We study a pseudo-differential equation driven by the degenerate fractional p Laplacian, under Dirichlet type conditions in a smooth domain. First we show that the solution set within the order interval given by a sub-supersolution pair is nonempty, directed, and compact, hence endowed with extremal elements. Then, we prove existence of a smallest positive, a biggest negative and a nodal solution, combining variational methods with truncation techniques. (c) 2020 Elsevier Inc. All rights reserved.
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页数:22
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