Let $\Omega$ be open and connected. Suppos that a sequence $$\{f_n : \Omega \to \mathbb{C} : f_n \mbox{ is holomorphic and injective in $\Omega$ }\}$$ Converges uniformly to a function $f$ on every compact subset of $\Omega$. Prove that if $f$ is not a constant in $\Omega$, then $f$ is injective in $\Omega$.
First I proved that $f$ is holomorphic.
Suppose that $f$ is not injective.
There are distinct point $z_1,z_2$ in $\Omega$.
Then there are path from $z1$ to $z2$ lying in $\Omega$. Then... I can't tell you How to solve.
Could you help me?