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Definition df-id0 49
Description: Define classical identity.
Assertion
Ref Expression
df-id0 (a ==0 b) = ((a' v b) ^ (b' v a))
Detailed syntax breakdown of Definition df-id0
StepHypRef Expression
1 wva . . 3 term a
2 wvb . . 3 term b
31, 2wid0 17 . 2 term (a ==0 b)
41wn 4 . . . 4 term a'
54, 2wo 6 . . 3 term (a' v b)
62wn 4 . . . 4 term b'
76, 1wo 6 . . 3 term (b' v a)
85, 7wa 7 . 2 term ((a' v b) ^ (b' v a))
93, 8wb 1 1 wff (a ==0 b) = ((a' v b) ^ (b' v a))
Colors of variables: term
This definition is referenced by:  nomcon0  301  nom20  313  nom30  319  nom50  331  nom60  337  id5leid0  351  lem3.3.7i0e1  1057  lem3.3.7i0e2  1058  wdid0id5  1109  wdid0id1  1110  wdid0id2  1111  wdid0id3  1112  wdid0id4  1113
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