Definition df-6 9376

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 9368	. 2 class 6
2		c5 9367	. . 3 class 5
3		c1 8186	. . 3 class 1
4		caddc 8188	. . 3 class +
5	2, 3, 4	co 6088	. 2 class ( 5 + 1 )
6	1, 5	wceq 1402	1 wff 6 = ( 5 + 1 )

This definition is used by:  6re  9394  6pos  9414  6m1e5  9436  5p1e6  9451  3p3e6  9456  4p2e6  9457  5p2e7  9460  6nn  9481  5lt6  9495  6p6e12  9865  7p6e13  9869  8p6e14  9875  8p8e16  9877  9p6e15  9882  9p7e16  9883  6t6e36  9899  7t6e42  9904  8t6e48  9910  9t6e54  9917  ppiublem1  16308  ppiublem2  16309  ppiqub  16310  bposlem8  16335  lgsdir2lem3  16371  2lgsoddprmlem3d  16451