Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2022-01-14 08:37 fb2b1a01

View on Github →

fix(algebra/star/basic): redefine star_ordered_ring (#11213) This PR redefines star_ordered_ring to remove the ordered_semiring assumption, which includes undesirable axioms such as ∀ (a b c : α), a < b → 0 < c → c * a < c * b. See the discussion on Zulip here.

Estimated changes