{"title":"Equivalence and regularity of weak and viscosity solutions for the anisotropic $${{\\textbf {p}}}(\\cdot )$$ -Laplacian","authors":"Pablo Ochoa, Federico Ramos Valverde","doi":"10.1007/s00030-024-00981-0","DOIUrl":null,"url":null,"abstract":"<p>In this paper, we state the equivalence between weak and viscosity solutions for non-homogeneous problems involving the anisotropic <span>\\({{\\textbf {p}}}(\\cdot )\\)</span>-Laplacian. The proof that viscosity solutions are weak solutions is performed by the inf-convolution technique. However, due to the anisotropic nature of the <span>\\({{\\textbf {p}}}(\\cdot )\\)</span>-Laplacian we adapt the definition of inf-convolution to the non-homogeneity of this operator. For the converse, we develop comparison principles for weak solutions. Since the locally Lipschitz assumption is crucial to get the viscosity-weak implication, we prove that a class of bounded viscosity solutions are indeed locally Lipschitz.</p>","PeriodicalId":501665,"journal":{"name":"Nonlinear Differential Equations and Applications (NoDEA)","volume":"18 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nonlinear Differential Equations and Applications (NoDEA)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/s00030-024-00981-0","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, we state the equivalence between weak and viscosity solutions for non-homogeneous problems involving the anisotropic \({{\textbf {p}}}(\cdot )\)-Laplacian. The proof that viscosity solutions are weak solutions is performed by the inf-convolution technique. However, due to the anisotropic nature of the \({{\textbf {p}}}(\cdot )\)-Laplacian we adapt the definition of inf-convolution to the non-homogeneity of this operator. For the converse, we develop comparison principles for weak solutions. Since the locally Lipschitz assumption is crucial to get the viscosity-weak implication, we prove that a class of bounded viscosity solutions are indeed locally Lipschitz.