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Theorem pm5.32d 587
Description: Distribution of implication over biconditional (deduction form). (Contributed by NM, 29-Oct-1996.)
Hypothesis
Ref Expression
pm5.32d.1 (𝜑 → (𝜓 → (𝜒𝜃)))
Assertion
Ref Expression
pm5.32d (𝜑 → ((𝜓𝜒) ↔ (𝜓𝜃)))

Proof of Theorem pm5.32d
StepHypRef Expression
1 pm5.32d.1 . 2 (𝜑 → (𝜓 → (𝜒𝜃)))
2 pm5.32 583 . 2 ((𝜓 → (𝜒𝜃)) ↔ ((𝜓𝜒) ↔ (𝜓𝜃)))
31, 2sylib 221 1 (𝜑 → ((𝜓𝜒) ↔ (𝜓𝜃)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 400
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 210  df-an 401
This theorem is referenced by:  pm5.32rd  588  pm5.32da  589  anbi2d  641  raltpd  4743  opeqsng  5477  dfres3  5974  cores  6240  isoini  7326  eqfunresadj  7348  mpoeq123  7472  ordpwsuc  7799  xpord3pred  8136  rdglim2  8407  indpi1  12223  fzind  12685  btwnz  12690  elfzm11  13614  isprm2  16730  isprm3  16731  modprminv  16849  modprminveq  16850  isrngim2  20526  elimifd  32799  xrecex  33152  ordtconnlem1  34231  dfrdg4  36314  ee7.2aOLD  36834  expdioph  43612  cantnf2  43914  pm14.122b  44997  rexbidar  45019
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