Definition df-inl 7387

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 7385	. 2 class inl
2		vx	. . 3 setvar x
3		cvv 2821	. . 3 class _V
4		c0 3520	. . . 4 class (/)
5	2	cv 1401	. . . 4 class x
6	4, 5	cop 3712	. . 3 class <. (/) , x >.
7	2, 3, 6	cmpt 4192	. 2 class ( x e. _V |-> <. (/) , x >. )
8	1, 7	wceq 1402	1 wff inl = ( x e. _V |-> <. (/) , x >. )

This definition is used by:  djulclr  7389  djulcl  7391  djulclb  7395  djulf1or  7396  djulf1o  7398  inl11  7405  djuss  7410  1stinl  7414  2ndinl  7415  caseinj  7429  caseinl  7431  djudoml  7575  djulclALT  16829