## Revista Matemática Iberoamericana

### Partial regularity for subquadratic parabolic systems by $\mathcal{A}$-caloric approximation

Christoph Scheven

#### Abstract

We establish a partial regularity result for weak solutions of nonsingular parabolic systems with subquadratic growth of the type $$\partial_t u - \mathrm{div} a(x,t,u,Du) = B(x,t,u,Du),$$ where the structure function $a$ satisfies ellipticity and growth conditions with growth rate $\frac{2n}{n+2} < p < 2$. We prove Hölder continuity of the spatial gradient of solutions away from a negligible set. The proof is based on a variant of a harmonic type approximation lemma adapted to parabolic systems with subquadratic growth.

#### Article information

Source
Rev. Mat. Iberoamericana, Volume 27, Number 3 (2011), 751-801.

Dates
First available in Project Euclid: 9 August 2011

Scheven, Christoph. Partial regularity for subquadratic parabolic systems by $\mathcal{A}$-caloric approximation. Rev. Mat. Iberoamericana 27 (2011), no. 3, 751--801. https://projecteuclid.org/euclid.rmi/1312906777