Definition df-6 9317

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 9309	. 2 class 6
2		c5 9308	. . 3 class 5
3		c1 8144	. . 3 class 1
4		caddc 8146	. . 3 class +
5	2, 3, 4	co 6058	. 2 class (5 + 1)
6	1, 5	wceq 1398	1 wff 6 = (5 + 1)

This definition is referenced by:  6re  9335  6pos  9355  6m1e5  9377  5p1e6  9392  3p3e6  9397  4p2e6  9398  5p2e7  9401  6nn  9420  5lt6  9434  6p6e12  9800  7p6e13  9804  8p6e14  9810  8p8e16  9812  9p6e15  9817  9p7e16  9818  6t6e36  9834  7t6e42  9839  8t6e48  9845  9t6e54  9852  lgsdir2lem3  16029  2lgsoddprmlem3d  16109