Definition df-inl 7245

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 7243	. 2 class inl
2		vx	. . 3 setvar x
3		cvv 2802	. . 3 class _V
4		c0 3494	. . . 4 class (/)
5	2	cv 1396	. . . 4 class x
6	4, 5	cop 3672	. . 3 class <. (/) , x >.
7	2, 3, 6	cmpt 4150	. 2 class ( x e. _V |-> <. (/) , x >. )
8	1, 7	wceq 1397	1 wff inl = ( x e. _V |-> <. (/) , x >. )

This definition is referenced by:  djulclr  7247  djulcl  7249  djulclb  7253  djulf1or  7254  djulf1o  7256  inl11  7263  djuss  7268  1stinl  7272  2ndinl  7273  caseinj  7287  caseinl  7289  djudoml  7433  djulclALT  16397