Theorem Cardinal.principal_add_aleph

Modification history

2025-01-26 06:03
Mathlib/SetTheory/Cardinal/Arithmetic.lean
feat(SetTheory/Cardinal/Arithmetic): omega ordinals are additively/multiplicatively principal (#18778)
Modified Cardinal.principal_add_alephView on Github →
2024-10-22 15:31
Mathlib/SetTheory/Cardinal/Arithmetic.lean
chore: use new `ℵ_` and `ℶ_` notation (#18066)
Modified Cardinal.principal_add_alephView on Github →
2023-02-23 13:50
Mathlib/SetTheory/Cardinal/Ordinal.lean
feat: port SetTheory.Cardinal.Ordinal (#2463)
Added Cardinal.principal_add_alephView on Github →