12231 424 1 Imaginary Numbers are Real - Part 1: Introduction 12231 424 1 Math Imaginary Numbers are Real
10547 259 0 Imaginary Numbers are Real - Part 2: A Little History 10547 259 0 Math Imaginary Numbers are Real
10792 144 0 Imaginary Numbers are Real - Part 3: Cardan's Problem 10792 144 0 Math Imaginary Numbers are Real
