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Theorem pm2.86i 110
Description: Inference associated with pm2.86 109. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf Lammen, 3-Apr-2013.)
Hypothesis
Ref Expression
pm2.86i.1 ((𝜑𝜓) → (𝜑𝜒))
Assertion
Ref Expression
pm2.86i (𝜑 → (𝜓𝜒))

Proof of Theorem pm2.86i
StepHypRef Expression
1 pm2.86i.1 . . 3 ((𝜑𝜓) → (𝜑𝜒))
21jarri 107 . 2 (𝜓 → (𝜑𝜒))
32com12 32 1 (𝜑 → (𝜓𝜒))
Colors of variables: wff setvar class
Syntax hints:  wi 4
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7
This theorem is referenced by:  cbv1  2428  bj-cbv1v  33064  stoweidlem17  40746
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