Definition df-6 9072

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

Assertion

Ref	Expression
df-6	⊢ 6 = (5 + 1)

Detailed syntax breakdown of Definition df-6

Step	Hyp	Ref	Expression
1		c6 9064	. 2 class 6
2		c5 9063	. . 3 class 5
3		c1 7899	. . 3 class 1
4		caddc 7901	. . 3 class +
5	2, 3, 4	co 5925	. 2 class (5 + 1)
6	1, 5	wceq 1364	1 wff 6 = (5 + 1)

This definition is referenced by:  6re  9090  6pos  9110  6m1e5  9132  5p1e6  9147  3p3e6  9152  4p2e6  9153  5p2e7  9156  6nn  9175  5lt6  9189  6p6e12  9549  7p6e13  9553  8p6e14  9559  8p8e16  9561  9p6e15  9566  9p7e16  9567  6t6e36  9583  7t6e42  9588  8t6e48  9594  9t6e54  9601  lgsdir2lem3  15379  2lgsoddprmlem3d  15459