Complex Analysis

Intuitive

Explanations in this section should contain no formulas, but instead colloquial things like you would hear them during a coffee break or at a cocktail party.

Concrete

Understanding Why Complex Multiplication Works by Kalid Azad
Visual Complex Analysis by Tristan Needham

Abstract

The motto in this section is: the higher the level of abstraction, the better.

Why is it interesting?

The shortest path between two truths in the real domain passes through the complex domain. J. Hadamard