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Definition df-inl 6932
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 6930 . 2 class inl
2 vx . . 3 setvar 𝑥
3 cvv 2686 . . 3 class V
4 c0 3363 . . . 4 class
52cv 1330 . . . 4 class 𝑥
64, 5cop 3530 . . 3 class ⟨∅, 𝑥
72, 3, 6cmpt 3989 . 2 class (𝑥 ∈ V ↦ ⟨∅, 𝑥⟩)
81, 7wceq 1331 1 wff inl = (𝑥 ∈ V ↦ ⟨∅, 𝑥⟩)
Colors of variables: wff set class
This definition is referenced by:  djulclr  6934  djulcl  6936  djulclb  6940  djulf1or  6941  djulf1o  6943  inl11  6950  djuss  6955  1stinl  6959  2ndinl  6960  caseinj  6974  caseinl  6976  djudoml  7080  djulclALT  13113
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