Subharmonicity of the modulus of quasiregular harmonic mappings

In this note we determine all numbers $q\in \mathbf R$ such that $|u|^q$ is a subharmonic function, provided that $u$ is a $K-$quasiregular harmonic mappings in an open subset $Ω$ of the Euclidean space $\mathbf R^n$.

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