Definition df-6 12378

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 12370	. 2 class 6
2		c5 12369	. . 3 class 5
3		c1 11172	. . 3 class 1
4		caddc 11174	. . 3 class +
5	2, 3, 4	co 7408	. 2 class (5 + 1)
6	1, 5	wceq 1570	1 wff 6 = (5 + 1)

This definition is used by:  6nn  12401  6re  12402  6cn  12403  6m1e5  12442  5p1e6  12458  3p3e6  12463  4p2e6  12464  5p2e7  12467  5lt6  12495  6p6e12  12862  7p6e13  12866  8p6e14  12872  8p8e16  12874  9p6e15  12879  9p7e16  12880  6t6e36  12896  7t6e42  12901  8t6e48  12907  9t6e54  12914  lt6abl  20070  ppiublem1  27492  ppiublem2  27493  ppiub  27494  bposlem8  27581  lgsdir2lem3  27617  2lgsoddprmlem3d  27703  aks4d1p1p5  43045  1p6e7  43233  rmydioph  43959  expdiophlem2  43967  ceil5half3  48338  stgoldbwt  48796  sbgoldbm  48804