Let $u=Arg(z)$ be a function maps $\mathbb{C}\setminus \{0\}$ to $ (-\pi,\pi]$.
How do i find a harmonic conjugate of $u$ when $Arg(z)\in (-\pi,\pi)$?
Let $u=Arg(z)$ be a function maps $\mathbb{C}\setminus \{0\}$ to $ (-\pi,\pi]$.
How do i find a harmonic conjugate of $u$ when $Arg(z)\in (-\pi,\pi)$?