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Theorem mdandyvr3 41135
Description: Given the equivalences set in the hypotheses, there exist a proof where ch, th, ta, et match ze, si accordingly. (Contributed by Jarvin Udandy, 7-Sep-2016.)
Hypotheses
Ref Expression
mdandyvr3.1  |-  ( ph  <->  ze )
mdandyvr3.2  |-  ( ps  <->  si )
mdandyvr3.3  |-  ( ch  <->  ps )
mdandyvr3.4  |-  ( th  <->  ps )
mdandyvr3.5  |-  ( ta  <->  ph )
mdandyvr3.6  |-  ( et  <->  ph )
Assertion
Ref Expression
mdandyvr3  |-  ( ( ( ( ch  <->  si )  /\  ( th  <->  si )
)  /\  ( ta  <->  ze ) )  /\  ( et 
<->  ze ) )

Proof of Theorem mdandyvr3
StepHypRef Expression
1 mdandyvr3.3 . . . . 5  |-  ( ch  <->  ps )
2 mdandyvr3.2 . . . . 5  |-  ( ps  <->  si )
31, 2bitri 264 . . . 4  |-  ( ch  <->  si )
4 mdandyvr3.4 . . . . 5  |-  ( th  <->  ps )
54, 2bitri 264 . . . 4  |-  ( th  <->  si )
63, 5pm3.2i 471 . . 3  |-  ( ( ch  <->  si )  /\  ( th 
<-> 
si ) )
7 mdandyvr3.5 . . . 4  |-  ( ta  <->  ph )
8 mdandyvr3.1 . . . 4  |-  ( ph  <->  ze )
97, 8bitri 264 . . 3  |-  ( ta  <->  ze )
106, 9pm3.2i 471 . 2  |-  ( ( ( ch  <->  si )  /\  ( th  <->  si )
)  /\  ( ta  <->  ze ) )
11 mdandyvr3.6 . . 3  |-  ( et  <->  ph )
1211, 8bitri 264 . 2  |-  ( et  <->  ze )
1310, 12pm3.2i 471 1  |-  ( ( ( ( ch  <->  si )  /\  ( th  <->  si )
)  /\  ( ta  <->  ze ) )  /\  ( et 
<->  ze ) )
Colors of variables: wff setvar class
Syntax hints:    <-> wb 196    /\ wa 384
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This theorem depends on definitions:  df-bi 197  df-an 386
This theorem is referenced by:  mdandyvr12  41144
  Copyright terms: Public domain W3C validator