Importance of complex analysis

What is the use of complex analysis?
It is helpful in many branches of mathematics, including algebraic geometry, number theory, analytic combinatorics, applied mathematics; as well as in physics, including the branches of hydrodynamics, thermodynamics, quantum mechanics, and twistor theory..
Why is complex analysis important?
Complex analysis is used to solve the CPT Theory (Charge, Parity and Time Reversal), as well as in conformal field theory and in the Wick's Theorem.
Complex variables are also a fundamental part of QM as they appear in the Wave Equation.
String Theory: Indeed, Complex Analysis shows up in abundance in String theory..

Complex analysis is an important component of the mathematical landscape, unifying many topics from the standard undergraduate curriculum. It can serve as an effective capstone course for the mathematics major and as a stepping stone to independent research or to the pursuit of higher mathematics in graduate school.

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Importance of complex analysis

What is the use of complex analysis?

Why is complex analysis important?