Definition df-6 9098

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 9090	. 2 class 6
2		c5 9089	. . 3 class 5
3		c1 7925	. . 3 class 1
4		caddc 7927	. . 3 class +
5	2, 3, 4	co 5943	. 2 class (5 + 1)
6	1, 5	wceq 1372	1 wff 6 = (5 + 1)

This definition is referenced by:  6re  9116  6pos  9136  6m1e5  9158  5p1e6  9173  3p3e6  9178  4p2e6  9179  5p2e7  9182  6nn  9201  5lt6  9215  6p6e12  9576  7p6e13  9580  8p6e14  9586  8p8e16  9588  9p6e15  9593  9p7e16  9594  6t6e36  9610  7t6e42  9615  8t6e48  9621  9t6e54  9628  lgsdir2lem3  15449  2lgsoddprmlem3d  15529