Translations:Dictionary:Hilbert transform/31/es

$\lim _{|\epsilon |\rightarrow 0}\lim _{|R|\rightarrow \infty }\left(\int _{-R}^{x-\epsilon }+\int _{x+\epsilon }^{R}\right)\left({\frac {f(w)\;dw}{w-z}}\right)=i\pi f(z)$