# Imaginary Numbers * [Euler's formula with introductory group theory](https://www.youtube.com/watch?v=ZxYOEwM6Wbk) * [Finding Your Roots - The New York Times](https://archive.nytimes.com/opinionator.blogs.nytimes.com/2010/03/07/finding-your-roots/?scp=1&sq=Strogatz&st=cse) * [Steven Strogatz on ruthless simplification — Night Science — Overcast](https://overcast.fm/+tWC4CCr1A/13:17)