Maximum modulus theorem, Minimum modulus theorem, Hadamard three circle theorem, Schwarz’s Lemma, Rouche’s theorem, Calculation of residues, Residue theorem.
Links:
[1] https://maths.iisuniv.ac.in/courses/subjects/complex-analysis-optional-paper-1
[2] https://maths.iisuniv.ac.in/academic-year/2015-2016