The letter ℘: name and origin? (2017)

(mathoverflow.net)

283 points IdealeZahlen | 1 comments | 14 Nov 24 16:28 UTC | HN request time: 0.21s | source

1. xg15 ◴[14 Nov 24 21:10 UTC] No.42141263[source]▶

"The letter formerly known as p"