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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  34461  ballotlemfcc  34462  dfrdg4  35925  bj-sbsb  36811  bj-opelidres  37135  clsk1indlem3  44016  sbiota1  44407
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