Def Ordinal.principalSegToType

Modification history

2026-09-01 10:17
Mathlib/SetTheory/Ordinal/Basic.lean
refactor(SetTheory/Ordinal): redefine Ordinal.ToType as Shrink (Iio o) (#42925) …
Deleted Ordinal.principalSegToTypeView on Github →
2025-12-08 05:19
Mathlib/SetTheory/Ordinal/Basic.lean
refactor: `Ordinal.toType` → `Ordinal.ToType` (#32449) …
Modified Ordinal.principalSegToTypeView on Github →
2024-10-10 11:25
Mathlib/SetTheory/Ordinal/Basic.lean
feat(Order/InitSeg): notation for initial and principal segments of `<` (#17481) …
Modified Ordinal.principalSegToTypeView on Github →
2024-08-27 18:38
Mathlib/SetTheory/Ordinal/Basic.lean
chore(SetTheory/Ordinal/*): `o.out.α` → `o.toType` (#16161) …
Added Ordinal.principalSegToTypeView on Github →