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Theorem anc2li 555
Description: Deduction conjoining antecedent to left of consequent in nested implication. (Contributed by NM, 10-Aug-1994.) (Proof shortened by Wolf Lammen, 7-Dec-2012.)
Hypothesis
Ref Expression
anc2li.1 (𝜑 → (𝜓𝜒))
Assertion
Ref Expression
anc2li (𝜑 → (𝜓 → (𝜑𝜒)))

Proof of Theorem anc2li
StepHypRef Expression
1 anc2li.1 . 2 (𝜑 → (𝜓𝜒))
2 id 22 . 2 (𝜑𝜑)
31, 2jctild 525 1 (𝜑 → (𝜓 → (𝜑𝜒)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  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:  imdistani  568  pwpw0  4769  sssn  4782  ordtr2  6362  tfis  7797  oeordi  8515  unblem3  9194  trcl  9637  frinsg  9663  pthisspthorcycl  29875  clwlkclwwlkfo  30084  h1datomi  31656  ballotlemfc0  34650  ballotlemfcc  34651  dfrdg4  36145  bj-sbsb  37038  bj-opelidres  37366  clsk1indlem3  44284  sbiota1  44675
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