Definition df-5

Description: Define the number 5. (Contributed by NM, 27-May-1999)

	Ref	Expression
Assertion	df-5	⊢ 5 = ( 4 + 1 )

Detailed syntax breakdown

Step	Hyp	Ref	Expression
0		c5	⊢ 5
1		c4	⊢ 4
2		caddc	⊢ +
3		c1	⊢ 1
4	1 3 2	co	⊢ ( 4 + 1 )
5	0 4	wceq	⊢ 5 = ( 4 + 1 )