Definition df-inl 7225

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 7223	. 2 class inl
2		vx	. . 3 setvar x
3		cvv 2799	. . 3 class _V
4		c0 3491	. . . 4 class (/)
5	2	cv 1394	. . . 4 class x
6	4, 5	cop 3669	. . 3 class <. (/) , x >.
7	2, 3, 6	cmpt 4145	. 2 class ( x e. _V |-> <. (/) , x >. )
8	1, 7	wceq 1395	1 wff inl = ( x e. _V |-> <. (/) , x >. )

This definition is referenced by:  djulclr  7227  djulcl  7229  djulclb  7233  djulf1or  7234  djulf1o  7236  inl11  7243  djuss  7248  1stinl  7252  2ndinl  7253  caseinj  7267  caseinl  7269  djudoml  7412  djulclALT  16220