3lue1brown has a great visualization of constructing p-adic numbers and calculating their metric through the lens of 2-adic numbers: https://m.youtube.com/watc

3lue1brown has a great visualization of constructing p-adic numbers and calculating their metric through the lens of 2-adic numbers: https://m.youtube.com/watch?v=XFDM1ip5HdU https://m.youtube.com/watch?v=XFDM1ip5HdU This article fills in some bits omitted from the video: https://www.quantamagazine.org/how-the-towering-p-adic-numbers-work-20201019/ https://www.quantamagazine.org/how-the-towering-p-adic-numbe...