Set.image_val_sUnion

∀ {α : Type u_2} {A : Set α} {T : Set (Set ↑A)}, Subtype.val '' ⋃₀ T = ⋃₀ {x | ∃ B ∈ T, Subtype.val '' B = x}

Defined in: Mathlib.Data.Set.Subset
Cited by: 0 results in Mathlib
Foundations: Depth 62 from the axioms · uses propext, Classical.choice, Quot.sound

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