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Gradient $L^q$ theory for a class of non-diagonal nonlinear elliptic systems
Type of publication: Article
Citation:
Publication status: Published
Journal: Nonlinear Analysis
Volume: 171
Year: 2018
Pages: 156--169
DOI: 10.1016/j.na.2018.02.004
Abstract: We consider a class of nonlinear non-diagonal elliptic systems with $p$-growth and establish the $L^q$-integrability for all $q\in [p,p+2]$ of any weak solution provided the corresponding right hand side belongs to the corresponding Lebesgue space and the involved elliptic operator asymptotically satisfies the $p$-uniform ellipticity, the so-called splitting condition and it is continuous with respect to the spatial variable. For operators satisfying the uniform $p$-ellipticity condition the higher integrability is known for $q\in[p,dp/(d-2)]$ and for operators having the so-called Uhlenbeck structure, the theory is valid for all $q\in [p,\infty)$. The key novelty of the paper is twofold. First, the statement uses only the information coming from the asymptotic operator and second, and more importantly, by using the splitting condition, we are able to extend the range of possible $q$'s significantly whenever $p
Preprint project: NCMM
Preprint year: 2017
Preprint number: 04
Preprint ID: NCMM/2017/04
Keywords: gradient estimates, non-diagonal elliptic systems, non-Uhlenbeck systems, regularity, splitting condition
Authors Bulíček, Miroslav
Kalousek, Martin
Kaplický, Petr
Mácha, Václav
Added by: [MB]
Total mark: 0
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