Partial and full boundary regularity for non-autonomous functionals with Φ-growth conditions

2019 ◽  
Vol 31 (4) ◽  
pp. 1027-1050
Author(s):  
Flavia Giannetti ◽  
Antonia Passarelli di Napoli ◽  
Atsushi Tachikawa

Abstract We prove partial and full boundary Hölder continuity, under a suitable regularity on the boundary datum, of the minimizers of non-autonomous integral functionals of the type \int_{\Omega}\Phi\bigl{(}(A^{\alpha\beta}_{ij}(x,u)D_{i}u^{\alpha}D_{j}u^{% \beta})^{\frac{1}{2}}\bigr{)}\mathop{}\!dx, where {\Omega\subset\mathbb{R}^{n}} is a bounded domain, {\Phi(t)=t^{p}\log^{\alpha}(e+t)} with {1<p\leq n} and {\alpha>0} , and {A(x,s)=(A^{\alpha\beta}_{ij}(x,s))} is a uniformly elliptic, bounded and continuous function.

Author(s):  
Lukas Koch

AbstractWe prove global $$W^{1,q}({\varOmega },{\mathbb {R}}^m)$$ W 1 , q ( Ω , R m ) -regularity for minimisers of convex functionals of the form $${\mathscr {F}}(u)=\int _{\varOmega } F(x,Du)\,{\mathrm{d}}x$$ F ( u ) = ∫ Ω F ( x , D u ) d x .$$W^{1,q}({\varOmega },{\mathbb {R}}^m)$$ W 1 , q ( Ω , R m ) regularity is also proven for minimisers of the associated relaxed functional. Our main assumptions on F(x, z) are a uniform $$\alpha $$ α -Hölder continuity assumption in x and controlled (p, q)-growth conditions in z with $$q<\frac{(n+\alpha )p}{n}$$ q < ( n + α ) p n .


2019 ◽  
Vol 16 (3) ◽  
pp. 403-447
Author(s):  
Igor Skrypnik ◽  
Mykhailo Voitovych

The article provides an application of the generalized De Giorgi functional classes to the proof of the Hölder continuity of weak solutions to quasilinear elliptic and parabolic equations with nonstandard growth conditions.


Fractals ◽  
2020 ◽  
Vol 28 (02) ◽  
pp. 2050032 ◽  
Author(s):  
LONG TIAN

In this paper, we investigate the Hölder continuity and the estimate for the box dimension of the Weyl fractional integral of some continuous function [Formula: see text], denoted by [Formula: see text]. We obtain that if [Formula: see text] is [Formula: see text]-order Hölder continuous, then [Formula: see text] is [Formula: see text]-order Hölder continuous. Moreover, if [Formula: see text] belongs to [Formula: see text], then [Formula: see text] is [Formula: see text]-order Hölder continuous with [Formula: see text].


2019 ◽  
Vol 9 (1) ◽  
pp. 1008-1025
Author(s):  
Giovanni Cupini ◽  
Matteo Focardi ◽  
Francesco Leonetti ◽  
Elvira Mascolo

Abstract In this paper we prove local Hölder continuity of vectorial local minimizers of special classes of integral functionals with rank-one and polyconvex integrands. The energy densities satisfy suitable structure assumptions and may have neither radial nor quasi-diagonal structure. The regularity of minimizers is obtained by proving that each component stays in a suitable De Giorgi class and, from this, we conclude about the Hölder continuity. In the final section, we provide some non-trivial applications of our results.


1993 ◽  
Vol 129 ◽  
pp. 97-113 ◽  
Author(s):  
Hisashi Naito

LetΩ⊂ Rmbe a bounded domain with smooth boundary, wherem≥ 2. We consider the exponential energy functionalforu:Ω→ Rn, wheren≥ 2.


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