Journal title
Nonlinear Analysis
DOI
10.1016/j.na.2017.12.007
Volume
170
Last updated
2020-08-09T21:04:41.22+01:00
Page
1-20
Abstract
We prove higher summability for the gradient of minimizers of strongly convex integral functionals of the Calculus of Variations ˆ Ω f(x, Du(x)) dx, u : Ω ⊂ R n → S N−1 , with growth conditions of (p, q)-type: |ξ| p ≤ f(x, ξ) ≤ C(|ξ| q + 1), p < q, in low dimension. Our procedure is set in the framework of Fractional Sobolev Spaces and renders the desired regularity as the result of an approximation technique relying on estimates obtained through a careful use of difference quotients.
Symplectic ID
1005190
Submitted to ORA
On
Publication type
Journal Article
Publication date
30 January 2018