Nonlinear Dirichlet problems with unilateral growth on the reaction

Papageorgiou, Nikolaos S. (author), Rǎdulescu, Vicenţiu (author), Repovš, Dušan (author)

We consider a nonlinear Dirichlet problem driven by the ▫$p$▫-Laplace differential operator with a reaction which has a subcritical growth restriction only from above. We prove two multiplicity theorems producing three nontrivial solutions, two of constant sign and the third nodal. The two multiplicity theorems differ on the geometry near the origin. In the semilinear case (that is, ▫$p=2$▫), using Morse theory (critical groups), we produce a second nodal solution for a total of four nontrivial solutions. As an illustration, we show that our results incorporate and significantly extend the multiplicity results existing for a class of parametric, coercive Dirichlet problems

• Language: English
• Keywords: unilateral growth, constant sign and nodal solutions, multiplicity theorems, critical groups
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: PEF - Faculty of Education; FMF - Faculty of Mathematics and Physics
• Year: 2019
• Number of pages: Str. 319-340
• Numbering: Vol. 31, iss. 2
• PID: 20.500.12556/RUL-108788
• UDC: 517.956.2
• ISSN on article: 0933-7741
• DOI: 10.1515/forum-2018-0114
• COBISS.SI-ID: 18471257
• Publication date in RUL: 25.07.2019

Record is a part of a journal

• Title: Forum mathematicum
• Shortened title: Forum math.
• Publisher: de Gruyter
• ISSN: 0933-7741
• COBISS.SI-ID: 26801408