Definition df-6 9196

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 9188	. 2 class 6
2		c5 9187	. . 3 class 5
3		c1 8023	. . 3 class 1
4		caddc 8025	. . 3 class +
5	2, 3, 4	co 6013	. 2 class (5 + 1)
6	1, 5	wceq 1395	1 wff 6 = (5 + 1)

This definition is referenced by:  6re  9214  6pos  9234  6m1e5  9256  5p1e6  9271  3p3e6  9276  4p2e6  9277  5p2e7  9280  6nn  9299  5lt6  9313  6p6e12  9674  7p6e13  9678  8p6e14  9684  8p8e16  9686  9p6e15  9691  9p7e16  9692  6t6e36  9708  7t6e42  9713  8t6e48  9719  9t6e54  9726  lgsdir2lem3  15749  2lgsoddprmlem3d  15829