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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  4764  sssn  4777  ordtr2  6352  tfis  7788  oeordi  8505  unblem3  9183  trcl  9624  frinsg  9647  pthisspthorcycl  29747  clwlkclwwlkfo  29953  h1datomi  31525  ballotlemfc0  34467  ballotlemfcc  34468  dfrdg4  35935  bj-sbsb  36821  bj-opelidres  37145  clsk1indlem3  44026  sbiota1  44417
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