9886 424 1 Imaginary Numbers are Real - Part 1: Introduction 9886 424 1 Math Imaginary Numbers are Real

8569 259 0 Imaginary Numbers are Real - Part 2: A Little History 8569 259 0 Math Imaginary Numbers are Real

8913 144 0 Imaginary Numbers are Real - Part 3: Cardan's Problem 8913 144 0 Math Imaginary Numbers are Real