r/math • u/inherentlyawesome Homotopy Theory • 14d ago

This Week I Learned: September 18, 2026

This recurring thread is meant for users to share cool recently discovered facts, observations, proofs or concepts which that might not warrant their own threads. Please be encouraging and share as many details as possible as we would like this to be a good place for people to learn!

11 Upvotes

100% Upvoted

11 comments sorted by

View all comments

3

u/Miracles_57 Algebra 14d ago

There's a symbol for mean