Theorem ZFSet.not_mem_of_subset

Modification history

2025-05-25 12:30
Mathlib/SetTheory/ZFC/Basic.lean
chore(*): not_mem/nmem -> notMem (#25159)
Deleted ZFSet.not_mem_of_subsetView on Github →
2024-12-15 00:11
Mathlib/SetTheory/ZFC/Basic.lean
feat(SetTheory/ZFC/Basic): `x ∈ y → ¬ y ⊆ x` (#19967)
Added ZFSet.not_mem_of_subsetView on Github →