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Enderton. Fix lemma 3B header.

finite-set-exercises
Joshua Potter 2023-08-09 10:10:11 -06:00
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commit e08e68bbc3
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Bookshelf/Enderton/Set/Chapter_3.lean
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@ -15,7 +15,7 @@ Relations and Functions
namespace Enderton.Set.Chapter_3
/-- #### Theorem 3B
/-- #### Lemma 3B
If `x ∈ C` and `y ∈ C`, then `⟨x, y⟩ ∈ 𝒫 𝒫 C`.
-/