Definition df-xor 1395

Description: Define exclusive disjunction (logical 'xor'). Return true if either the left or right, but not both, are true. Contrast with /\ (wa 104), \/ (wo 709), and -> (wi 4) . (Contributed by FL, 22-Nov-2010.) (Modified by Jim Kingdon, 1-Mar-2018.)

Assertion

Ref	Expression
df-xor	|- ( ( ph \/_ ps ) <-> ( ( ph \/ ps ) /\ -. ( ph /\ ps ) ) )

Detailed syntax breakdown of Definition df-xor

Step	Hyp	Ref	Expression
1		wph	. . 3 wff ph
2		wps	. . 3 wff ps
3	1, 2	wxo 1394	. 2 wff ( ph \/_ ps )
4	1, 2	wo 709	. . 3 wff ( ph \/ ps )
5	1, 2	wa 104	. . . 4 wff ( ph /\ ps )
6	5	wn 3	. . 3 wff -. ( ph /\ ps )
7	4, 6	wa 104	. 2 wff ( ( ph \/ ps ) /\ -. ( ph /\ ps ) )
8	3, 7	wb 105	1 wff ( ( ph \/_ ps ) <-> ( ( ph \/ ps ) /\ -. ( ph /\ ps ) ) )

This definition is referenced by:  xoranor  1396  xorbi2d  1399  xorbi1d  1400  xorbin  1403  xorcom  1407  xornbidc  1410  xordc1  1412  anxordi  1419  truxortru  1438  truxorfal  1439  falxortru  1440  falxorfal  1441  mptxor  1443  reapltxor  8644  zeoxor  12099  odd2np1  12103  bdxor  15636  trirec0xor  15848