Definition df-8 5976

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 5967	. 2 class 8
2		c7 5966	. . 3 class 7
3		c1 5235	. . 3 class 1
4		caddc 5237	. . 3 class +
5	2, 3, 4	co 3963	. 2 class (7 + 1)
6	1, 5	wceq 956	1 wff 8 = (7 + 1)

This definition is referenced by:  8re 5986  8pos 5996  4p4e8 6011  5p3e8 6013  6p2e8 6016  7p2e9 6019  cos2bnd 7475

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