Definition df-6

Description: Define the number 6. (Contributed by NM, 27-May-1999)

	Ref	Expression
Assertion	df-6	|- 6 = ( 5 + 1 )

Detailed syntax breakdown

Step	Hyp	Ref	Expression
0		c6	|- 6
1		c5	|- 5
2		caddc	|- +
3		c1	|- 1
4	1 3 2	co	|- ( 5 + 1 )
5	0 4	wceq	|- 6 = ( 5 + 1 )