Norm estimates of the partial derivatives for harmonic and harmonic elliptic mappings

Sh. Chen, S. Ponnusamy, X. Wang

Let $f=P[F]$ denote the Poisson integral of $F$ in the unit disk $\mathbb{D}$ with $F$ being absolutely continuous in the unit circle $\mathbb{T}$ and $\dot{F}\in L_p(0,2\pi )$, wh…