[user2994cb]

You can construct the complex numbers quite nicely with Geometric Algebra: https://www.youtube.com/watch?v=PNlgMPzj-7Q

[Jedi72]

This video is FANTASTIC. Thank you so much. First time I've ever see someone draw what the imaginary number is conceptually! Also seeing a 4 dime sional vector space defined in R2 blew my mind. Thankyou.

Students these days are very lucky.