Definition df-inl 6981

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 6979	. 2 class inl
2		vx	. . 3 setvar x
3		cvv 2712	. . 3 class _V
4		c0 3394	. . . 4 class (/)
5	2	cv 1334	. . . 4 class x
6	4, 5	cop 3563	. . 3 class <. (/) , x >.
7	2, 3, 6	cmpt 4025	. 2 class ( x e. _V |-> <. (/) , x >. )
8	1, 7	wceq 1335	1 wff inl = ( x e. _V |-> <. (/) , x >. )

This definition is referenced by:  djulclr  6983  djulcl  6985  djulclb  6989  djulf1or  6990  djulf1o  6992  inl11  6999  djuss  7004  1stinl  7008  2ndinl  7009  caseinj  7023  caseinl  7025  djudoml  7137  djulclALT  13334