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Theorem mdandyvr15 28028
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
mdandyvr15.1  |-  ( ph  <->  ze )
mdandyvr15.2  |-  ( ps  <->  si )
mdandyvr15.3  |-  ( ch  <->  ps )
mdandyvr15.4  |-  ( th  <->  ps )
mdandyvr15.5  |-  ( ta  <->  ps )
mdandyvr15.6  |-  ( et  <->  ps )
Assertion
Ref Expression
mdandyvr15  |-  ( ( ( ( ch  <->  si )  /\  ( th  <->  si )
)  /\  ( ta  <->  si ) )  /\  ( et 
<-> 
si ) )

Proof of Theorem mdandyvr15
StepHypRef Expression
1 mdandyvr15.3 . . . . 5  |-  ( ch  <->  ps )
2 mdandyvr15.2 . . . . 5  |-  ( ps  <->  si )
31, 2bitri 240 . . . 4  |-  ( ch  <->  si )
4 mdandyvr15.4 . . . . 5  |-  ( th  <->  ps )
54, 2bitri 240 . . . 4  |-  ( th  <->  si )
63, 5pm3.2i 441 . . 3  |-  ( ( ch  <->  si )  /\  ( th 
<-> 
si ) )
7 mdandyvr15.5 . . . 4  |-  ( ta  <->  ps )
87, 2bitri 240 . . 3  |-  ( ta  <->  si )
96, 8pm3.2i 441 . 2  |-  ( ( ( ch  <->  si )  /\  ( th  <->  si )
)  /\  ( ta  <->  si ) )
10 mdandyvr15.6 . . 3  |-  ( et  <->  ps )
1110, 2bitri 240 . 2  |-  ( et  <->  si )
129, 11pm3.2i 441 1  |-  ( ( ( ( ch  <->  si )  /\  ( th  <->  si )
)  /\  ( ta  <->  si ) )  /\  ( et 
<-> 
si ) )
Colors of variables: wff set class
Syntax hints:    <-> wb 176    /\ wa 358
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
  Copyright terms: Public domain W3C validator