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[Merged by Bors] - chore: fix aligns #7529

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[Merged by Bors] - chore: fix aligns #7529

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d041494
chore: add and fix aligns
mariainesdff Oct 5, 2023
bff8490
remove aligns
mariainesdff Oct 6, 2023
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4 changes: 2 additions & 2 deletions Mathlib/Data/Set/Basic.lean
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Expand Up @@ -806,12 +806,12 @@ theorem union_right_comm (s₁ s₂ s₃ : Set α) : s₁ ∪ s₂ ∪ s₃ = s
@[simp]
theorem union_eq_left {s t : Set α} : s ∪ t = s ↔ t ⊆ s :=
sup_eq_left
#align set.union_eq_left Set.union_eq_left
#align set.union_eq_left_iff_subset Set.union_eq_left

@[simp]
theorem union_eq_right {s t : Set α} : s ∪ t = t ↔ s ⊆ t :=
sup_eq_right
#align set.union_eq_right Set.union_eq_right
#align set.union_eq_right_iff_subset Set.union_eq_right

theorem union_eq_self_of_subset_left {s t : Set α} (h : s ⊆ t) : s ∪ t = t :=
union_eq_right.mpr h
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2 changes: 2 additions & 0 deletions Mathlib/Order/Lattice.lean
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Expand Up @@ -1169,10 +1169,12 @@ theorem map_sup [SemilatticeSup β] (hf : MonotoneOn f s) (hx : x ∈ s) (hy : y
first
| assumption
| simp only [*, sup_of_le_left, sup_of_le_right]
#align monotone_on.map_sup MonotoneOn.map_sup
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bors r-

I think this belongs in #6339, which is a forward-port of these lemmas.

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(what happened here is that the lemmas were independently added to mathlib3 and mathlib4)

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OK, I have removed these aligns. (Since I was already fixing some aligns, when I saw this question it made sense to me to also add these).


theorem map_inf [SemilatticeInf β] (hf : MonotoneOn f s) (hx : x ∈ s) (hy : y ∈ s) :
f (x ⊓ y) = f x ⊓ f y :=
hf.dual.map_sup hx hy
#align monotone_on.map_inf MonotoneOn.map_inf

end MonotoneOn

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