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Theorem mdandyvrx4 27930
Description: Given the exclusivities set in the hypotheses, there exist a proof where ch, th, ta, et exclude ze, si accordingly (Contributed by Jarvin Udandy, 7-Sep-2016.)
Hypotheses
Ref Expression
mdandyvrx4.1  |-  ( ph \/_ ze )
mdandyvrx4.2  |-  ( ps
\/_ si )
mdandyvrx4.3  |-  ( ch  <->  ph )
mdandyvrx4.4  |-  ( th  <->  ph )
mdandyvrx4.5  |-  ( ta  <->  ps )
mdandyvrx4.6  |-  ( et  <->  ph )
Assertion
Ref Expression
mdandyvrx4  |-  ( ( ( ( ch \/_ ze )  /\  ( th \/_ ze ) )  /\  ( ta \/_ si ) )  /\  ( et \/_ ze ) )

Proof of Theorem mdandyvrx4
StepHypRef Expression
1 mdandyvrx4.1 . . . . 5  |-  ( ph \/_ ze )
2 mdandyvrx4.3 . . . . 5  |-  ( ch  <->  ph )
31, 2axorbciffatcxorb 27873 . . . 4  |-  ( ch
\/_ ze )
4 mdandyvrx4.4 . . . . 5  |-  ( th  <->  ph )
51, 4axorbciffatcxorb 27873 . . . 4  |-  ( th
\/_ ze )
63, 5pm3.2i 441 . . 3  |-  ( ( ch \/_ ze )  /\  ( th \/_ ze ) )
7 mdandyvrx4.2 . . . 4  |-  ( ps
\/_ si )
8 mdandyvrx4.5 . . . 4  |-  ( ta  <->  ps )
97, 8axorbciffatcxorb 27873 . . 3  |-  ( ta
\/_ si )
106, 9pm3.2i 441 . 2  |-  ( ( ( ch \/_ ze )  /\  ( th \/_ ze ) )  /\  ( ta \/_ si ) )
11 mdandyvrx4.6 . . 3  |-  ( et  <->  ph )
121, 11axorbciffatcxorb 27873 . 2  |-  ( et
\/_ ze )
1310, 12pm3.2i 441 1  |-  ( ( ( ( ch \/_ ze )  /\  ( th \/_ ze ) )  /\  ( ta \/_ si ) )  /\  ( et \/_ ze ) )
Colors of variables: wff set class
Syntax hints:    <-> wb 176    /\ wa 358   \/_wxo 1295
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8
This theorem depends on definitions:  df-bi 177  df-an 360  df-xor 1296
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