I am studying complex analysis. And I see a topic, namely meremorphic functions
But I cannot find any enough information about this function. So I have insufficient knowledge about this topic.
And I have found a question like following below with its answer.
Please can someone explain the answer of this question in more detail explanatorily? I Will be happy. Thank you so much for helping:)
Question: classify all invertible meromorphic functions from $\Bbb C\cup \{\infty\}$ to $\Bbb C \cup \{\infty\}$
The question with its answer:
