Theorem LowerSet.sdiff_singleton

Modification history

2026-03-23 08:24
Mathlib/Order/UpperLower/Closure.lean
chore(Order/UpperLower/Closure): use `to_dual` (#36969) …
Deleted LowerSet.sdiff_singletonView on Github →
2025-03-24 10:45
Mathlib/Order/UpperLower/Basic.lean
chore: split `Order.UpperLower.Basic` (#23248) …
Modified LowerSet.sdiff_singletonView on Github →
2023-10-21 10:50
Mathlib/Order/UpperLower/Basic.lean
feat: Removing elements from a lower set (#7374) …
Added LowerSet.sdiff_singletonView on Github →