Theorem isLowerSet_sUnion

Modification history

2026-01-25 18:29

Mathlib/Order/UpperLower/Basic.lean

feat(Order/UpperLower/Basic): use `to_dual` - part 1 (#33950)

Deleted isLowerSet_sUnion View on Github →

2023-05-14 07:05

Mathlib/Order/UpperLower/Basic.lean

chore: Rename to `sSup`/`iSup` (#3938) …

Added isLowerSet_sUnion View on Github →