Theorem IsWellFounded.mem_range_rank_of_le

Modification history

2026-09-11 10:13
Mathlib/SetTheory/Ordinal/Rank.lean
refactor: replace `IsWellFounded` with `WellFounded` (#42351) …
Deleted IsWellFounded.mem_range_rank_of_leView on Github →
2024-10-23 15:46
Mathlib/SetTheory/Ordinal/Rank.lean
feat(SetTheory/Ordinal/Rank): in a well-order, `IsWellFounded.rank = Ordinal.typein` (#18079)
Added IsWellFounded.mem_range_rank_of_leView on Github →