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Theorem pm5.32d 577
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 pm5.32 573 . 2 ((𝜓 → (𝜒𝜃)) ↔ ((𝜓𝜒) ↔ (𝜓𝜃)))
31, 2sylib 218 1 (𝜑 → ((𝜓𝜒) ↔ (𝜓𝜃)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206  wa 395
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 207  df-an 396
This theorem is referenced by:  pm5.32rd  578  pm5.32da  579  anbi2d  630  raltpd  4731  opeqsng  5441  dfres3  5932  cores  6196  isoini  7272  eqfunresadj  7294  mpoeq123  7418  ordpwsuc  7745  xpord3pred  8082  rdglim2  8351  fzind  12571  btwnz  12576  elfzm11  13495  isprm2  16593  isprm3  16594  modprminv  16711  modprminveq  16712  isrngim2  20371  bian1d  32435  elimifd  32523  indpi1  32841  xrecex  32900  ordtconnlem1  33937  dfrdg4  35995  ee7.2aOLD  36505  expdioph  43115  cantnf2  43417  pm14.122b  44515  rexbidar  44537
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