Mathlib Changelog
v4
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Theorem
Set.iUnion₂_comm
Modification history
2025-07-28 02:18
Mathlib/Data/Set/Lattice.lean
feat: `⋃ x ∈ s ×ˢ t, f x.1 ×ˢ g x.2 = (⋃ x ∈ s, f x) ×ˢ (⋃ x ∈ t, g x)` etc. (#27016) …
Modified
Set.iUnion₂_comm
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2023-05-14 07:05
Mathlib/Data/Set/Lattice.lean
chore: Rename to `sSup`/`iSup` (#3938) …
Added
Set.iUnion₂_comm
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