| This paper considers the higher integrability for A-harmonic funciton, which has strong background in physics and mechanics, and plays an important role in modern geo-metric function theory and nonlinear analysis. A simple proof for the higher integrability result of A-harmonic functions is given by using an inequality due to Carozza and Passarelli and the Sobolev space method, where the functioni A(χ,ξ) satisfies the following growth and coercivity condi-tions and the natural exponent p∈[n/(n-1),n).
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