Definition df-8

Description: Define the number 8. (Contributed by NM, 27-May-1999)

	Ref	Expression
Assertion	df-8	$$⊢8=7+1$$

Detailed syntax breakdown

Step	Hyp	Ref	Expression
0		c8	$$class8$$
1		c7	$$class7$$
2		caddc	$$class+$$
3		c1	$$class1$$
4	1 3 2	co	$$class\left(7+1\right)$$
5	0 4	wceq	$$wff8=7+1$$