Theorem Cardinal.mk_emptyCollection_iff

Modification history

2026-02-05 15:01
Mathlib/SetTheory/Cardinal/Basic.lean
feat: set has cardinality one iff singleton (#28680)
Deleted Cardinal.mk_emptyCollection_iffView on Github →
2023-07-03 11:03
Mathlib/SetTheory/Cardinal/Basic.lean
fix: precedence of `#` (#5623)
Modified Cardinal.mk_emptyCollection_iffView on Github →
2023-04-10 13:16
Mathlib/SetTheory/Cardinal/Basic.lean
chore: update SHA for mathlib#18268, #18771, RelIso/Basic (#3362) …
Modified Cardinal.mk_emptyCollection_iffView on Github →
2023-02-11 10:18
Mathlib/SetTheory/Cardinal/Basic.lean
feat: port SetTheory.Cardinal.Basic (#2084)
Added Cardinal.mk_emptyCollection_iffView on Github →