Definition df-6 9205

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 9197	. 2 class 6
2		c5 9196	. . 3 class 5
3		c1 8032	. . 3 class 1
4		caddc 8034	. . 3 class +
5	2, 3, 4	co 6017	. 2 class (5 + 1)
6	1, 5	wceq 1397	1 wff 6 = (5 + 1)

This definition is referenced by:  6re  9223  6pos  9243  6m1e5  9265  5p1e6  9280  3p3e6  9285  4p2e6  9286  5p2e7  9289  6nn  9308  5lt6  9322  6p6e12  9683  7p6e13  9687  8p6e14  9693  8p8e16  9695  9p6e15  9700  9p7e16  9701  6t6e36  9717  7t6e42  9722  8t6e48  9728  9t6e54  9735  lgsdir2lem3  15758  2lgsoddprmlem3d  15838