Abstract
We consider nonlinear elliptic systems of divergent-type second-order partial differential equations with solutionsu ∈W p 1 . It is proved thatDu ∈L q with someq ∈ (p; +∞) and it is explicitly shown howq depends on the ellipticity modulus of the system. Some conditions on the ellipticity modulus are obtained under which the solutions satisfy the Holder conditions and the Liouville theorem holds.
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