Definition df-inl 7048

Description: Left injection of a disjoint union. (Contributed by Mario Carneiro, 21-Jun-2022.)

Assertion

Ref	Expression
df-inl	|- inl = ( x e. _V |-> <. (/) , x >. )

Detailed syntax breakdown of Definition df-inl

Step	Hyp	Ref	Expression
1		cinl 7046	. 2 class inl
2		vx	. . 3 setvar x
3		cvv 2739	. . 3 class _V
4		c0 3424	. . . 4 class (/)
5	2	cv 1352	. . . 4 class x
6	4, 5	cop 3597	. . 3 class <. (/) , x >.
7	2, 3, 6	cmpt 4066	. 2 class ( x e. _V |-> <. (/) , x >. )
8	1, 7	wceq 1353	1 wff inl = ( x e. _V |-> <. (/) , x >. )

This definition is referenced by:  djulclr  7050  djulcl  7052  djulclb  7056  djulf1or  7057  djulf1o  7059  inl11  7066  djuss  7071  1stinl  7075  2ndinl  7076  caseinj  7090  caseinl  7092  djudoml  7220  djulclALT  14592