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Definition df-inl 9319
Description: Left injection of a disjoint union. (Contributed by Mario Carneiro, 21-Jun-2022.)
Assertion
Ref Expression
df-inl inl = (𝑥 ∈ V ↦ ⟨∅, 𝑥⟩)

Detailed syntax breakdown of Definition df-inl
StepHypRef Expression
1 cinl 9316 . 2 class inl
2 vx . . 3 setvar 𝑥
3 cvv 3492 . . 3 class V
4 c0 4288 . . . 4 class
52cv 1527 . . . 4 class 𝑥
64, 5cop 4563 . . 3 class ⟨∅, 𝑥
72, 3, 6cmpt 5137 . 2 class (𝑥 ∈ V ↦ ⟨∅, 𝑥⟩)
81, 7wceq 1528 1 wff inl = (𝑥 ∈ V ↦ ⟨∅, 𝑥⟩)
Colors of variables: wff setvar class
This definition is referenced by:  djulcl  9327  djulf1o  9329  inlresf  9331  djur  9336  djuss  9337  djuun  9343  1stinl  9344  2ndinl  9345
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