Definition df-8 4468

Description: Define the number 8.

Assertion

Ref	Expression
df-8	⊢ 8 = (7 + 1)

Detailed syntax breakdown of Definition df-8

Step	Hyp	Ref	Expression
1		c8 4460	. 2 class 8
2		c7 4459	. . 3 class 7
3		c1 4029	. . 3 class 1
4		caddc 4031	. . 3 class +
5	2, 3, 4	co 3001	L. 2 class (7 + 1)
6	1, 5	wceq 1091	1 wff 8 = (7 + 1)

This definition is referenced by:  8re 4477  8pos 4485  4p4e8 4496  5p3e8 4498  6p2e8 4500  7p2e9 4502

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