Theorem Ordinal.lsub_le_iff

Modification history

2026-03-27 12:01
Mathlib/SetTheory/Ordinal/Family.lean
feat(SetTheory/Ordinal): small lemmas on `⨆ i, f i + 1` (#37264) …
Modified Ordinal.lsub_le_iffView on Github →
2025-10-01 11:17
Mathlib/SetTheory/Ordinal/Family.lean
chore: remove deprecated declarations in `SetTheory.Ordinal.Family` (#30102) …
Modified Ordinal.lsub_le_iffView on Github →
2025-03-18 10:08
Mathlib/SetTheory/Ordinal/Arithmetic.lean
chore(SetTheory): split `Ordinal/Arithmetic.lean` (#23017) …
Modified Ordinal.lsub_le_iffView on Github →
2023-02-16 08:59
Mathlib/SetTheory/Ordinal/Arithmetic.lean
feat: port SetTheory.Ordinal.Arithmetic (#2271)
Added Ordinal.lsub_le_iffView on Github →