Theorem WellFounded.rank_lt_of_rel

Modification history

2026-09-11 10:13
Mathlib/SetTheory/Ordinal/Rank.lean
refactor: replace `IsWellFounded` with `WellFounded` (#42351) …
Added WellFounded.rank_lt_of_relView on Github →
2025-03-21 01:28
Mathlib/SetTheory/Ordinal/Rank.lean
chore: remove >6 month old deprecations in `SetTheory` (#23164) …
Deleted WellFounded.rank_lt_of_relView on Github →
2024-10-22 17:17
Mathlib/SetTheory/Ordinal/Arithmetic.lean
chore(SetTheory/Ordinal/Rank): move `IsWellFounded.rank` to its own file (#18078)
Modified WellFounded.rank_lt_of_relView on Github →
2023-02-16 08:59
Mathlib/SetTheory/Ordinal/Arithmetic.lean
feat: port SetTheory.Ordinal.Arithmetic (#2271)
Added WellFounded.rank_lt_of_relView on Github →