Definition df-8 9304

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

Assertion

Ref	Expression
df-8	|- 8 = ( 7 + 1 )

Detailed syntax breakdown of Definition df-8

Step	Hyp	Ref	Expression
1		c8 9296	. 2 class 8
2		c7 9295	. . 3 class 7
3		c1 8130	. . 3 class 1
4		caddc 8132	. . 3 class +
5	2, 3, 4	co 6052	. 2 class ( 7 + 1 )
6	1, 5	wceq 1398	1 wff 8 = ( 7 + 1 )

This definition is referenced by:  8re  9324  8pos  9342  8m1e7  9364  7p1e8  9379  4p4e8  9385  5p3e8  9387  6p2e8  9389  7p2e9  9391  8nn  9407  7lt8  9430  8p8e16  9797  9p8e17  9804  9p9e18  9805  8t8e64  9832  9t8e72  9839