Theorem Ordinal.ne_zero_of_out_nonempty

Modification history

2024-08-27 18:38

Mathlib/SetTheory/Ordinal/Basic.lean

chore(SetTheory/Ordinal/*): `o.out.α` → `o.toType` (#16161) …

Modified Ordinal.ne_zero_of_out_nonempty View on Github →

2023-02-13 06:43

Mathlib/SetTheory/Ordinal/Basic.lean

feat: port SetTheory.Ordinal.Basic (#2217) …

Added Ordinal.ne_zero_of_out_nonempty View on Github →