Theorems · Theorem · order theory

Set.iUnionLift_mk

∀ {α : Type u_1} {ι : Sort u_3} {β : Sort u_2} {S : ι → Set α} {f : (i : ι) → ↑(S i) → β}
  {hf : ∀ (i j : ι) (x : α) (hxi : x ∈ S i) (hxj : x ∈ S j), f i ⟨x, hxi⟩ = f j ⟨x, hxj⟩} {T : Set α}
  {hT : T ⊆ Set.iUnion S} {i : ι} (x : ↑(S i)) (hx : ↑x ∈ T), Set.iUnionLift S f hf T hT ⟨↑x, hx⟩ = f i x

Defined in

Mathlib.Data.Set.UnionLift

Cited by

6 results in Mathlib

Foundations

Depth 11 from the axioms · uses Classical.choice