QLE Home Quantum Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  QLE Home  >  Th. List  >  dp41lemf Unicode version

Theorem dp41lemf 1186
Description: Part of proof (4)=>(1) in Day/Pickering 1982.
Hypotheses
Ref Expression
dp41lem.1 c0 = ((a1 v a2) ^ (b1 v b2))
dp41lem.2 c1 = ((a0 v a2) ^ (b0 v b2))
dp41lem.3 c2 = ((a0 v a1) ^ (b0 v b1))
dp41lem.4 p = (((a0 v b0) ^ (a1 v b1)) ^ (a2 v b2))
dp41lem.5 p2 = ((a0 v b0) ^ (a1 v b1))
dp41lem.6 p2 =< (a2 v b2)
Assertion
Ref Expression
dp41lemf ((c0 v c1) v ((a0 ^ (b0 v b1)) v (b1 ^ (a0 v a1)))) = (((b1 v b2) ^ ((a1 v a2) v (b1 ^ (a0 v a1)))) v ((a0 v a2) ^ ((b0 v b2) v (a0 ^ (b0 v b1)))))

Proof of Theorem dp41lemf
StepHypRef Expression
1 orcom 73 . . 3 ((a0 ^ (b0 v b1)) v (b1 ^ (a0 v a1))) = ((b1 ^ (a0 v a1)) v (a0 ^ (b0 v b1)))
21lor 70 . 2 ((c0 v c1) v ((a0 ^ (b0 v b1)) v (b1 ^ (a0 v a1)))) = ((c0 v c1) v ((b1 ^ (a0 v a1)) v (a0 ^ (b0 v b1))))
3 or4 84 . . 3 ((c0 v c1) v ((b1 ^ (a0 v a1)) v (a0 ^ (b0 v b1)))) = ((c0 v (b1 ^ (a0 v a1))) v (c1 v (a0 ^ (b0 v b1))))
4 dp41lem.1 . . . . . 6 c0 = ((a1 v a2) ^ (b1 v b2))
5 ancom 74 . . . . . 6 ((a1 v a2) ^ (b1 v b2)) = ((b1 v b2) ^ (a1 v a2))
64, 5tr 62 . . . . 5 c0 = ((b1 v b2) ^ (a1 v a2))
76ror 71 . . . 4 (c0 v (b1 ^ (a0 v a1))) = (((b1 v b2) ^ (a1 v a2)) v (b1 ^ (a0 v a1)))
8 dp41lem.2 . . . . 5 c1 = ((a0 v a2) ^ (b0 v b2))
98ror 71 . . . 4 (c1 v (a0 ^ (b0 v b1))) = (((a0 v a2) ^ (b0 v b2)) v (a0 ^ (b0 v b1)))
107, 92or 72 . . 3 ((c0 v (b1 ^ (a0 v a1))) v (c1 v (a0 ^ (b0 v b1)))) = ((((b1 v b2) ^ (a1 v a2)) v (b1 ^ (a0 v a1))) v (((a0 v a2) ^ (b0 v b2)) v (a0 ^ (b0 v b1))))
113, 10tr 62 . 2 ((c0 v c1) v ((b1 ^ (a0 v a1)) v (a0 ^ (b0 v b1)))) = ((((b1 v b2) ^ (a1 v a2)) v (b1 ^ (a0 v a1))) v (((a0 v a2) ^ (b0 v b2)) v (a0 ^ (b0 v b1))))
12 leao1 162 . . . 4 (b1 ^ (a0 v a1)) =< (b1 v b2)
1312mli 1124 . . 3 (((b1 v b2) ^ (a1 v a2)) v (b1 ^ (a0 v a1))) = ((b1 v b2) ^ ((a1 v a2) v (b1 ^ (a0 v a1))))
14 leao1 162 . . . 4 (a0 ^ (b0 v b1)) =< (a0 v a2)
1514mli 1124 . . 3 (((a0 v a2) ^ (b0 v b2)) v (a0 ^ (b0 v b1))) = ((a0 v a2) ^ ((b0 v b2) v (a0 ^ (b0 v b1))))
1613, 152or 72 . 2 ((((b1 v b2) ^ (a1 v a2)) v (b1 ^ (a0 v a1))) v (((a0 v a2) ^ (b0 v b2)) v (a0 ^ (b0 v b1)))) = (((b1 v b2) ^ ((a1 v a2) v (b1 ^ (a0 v a1)))) v ((a0 v a2) ^ ((b0 v b2) v (a0 ^ (b0 v b1)))))
172, 11, 163tr 65 1 ((c0 v c1) v ((a0 ^ (b0 v b1)) v (b1 ^ (a0 v a1)))) = (((b1 v b2) ^ ((a1 v a2) v (b1 ^ (a0 v a1)))) v ((a0 v a2) ^ ((b0 v b2) v (a0 ^ (b0 v b1)))))
Colors of variables: term
Syntax hints:   = wb 1   =< wle 2   v wo 6   ^ wa 7
This theorem was proved from axioms:  ax-a1 30  ax-a2 31  ax-a3 32  ax-a5 34  ax-r1 35  ax-r2 36  ax-r4 37  ax-r5 38  ax-ml 1120
This theorem depends on definitions:  df-a 40  df-t 41  df-f 42  df-le1 130  df-le2 131
This theorem is referenced by:  dp41lemm  1192
  Copyright terms: Public domain W3C validator