Definition df-edgf

Description: Define the edge function (indexed edges) of a graph. (Contributed by AV, 18-Jan-2020) Use its index-independent form edgfid instead. (New usage is discouraged.)

	Ref	Expression
Assertion	df-edgf	$$⊢\mathrm{ef}=\mathrm{Slot}18$$

Detailed syntax breakdown

Step	Hyp	Ref	Expression
0		cedgf	$$class\mathrm{ef}$$
1		c1	$$class1$$
2		c8	$$class8$$
3	1 2	cdc	$$class18$$
4	3	cslot	$$class\mathrm{Slot}18$$
5	0 4	wceq	$$wff\mathrm{ef}=\mathrm{Slot}18$$