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Theorem orim1i 676
Description: Introduce disjunct to both sides of an implication. (Contributed by NM, 6-Jun-1994.)
Hypothesis
Ref Expression
orim1i.1 (φψ)
Assertion
Ref Expression
orim1i ((φ χ) → (ψ χ))

Proof of Theorem orim1i
StepHypRef Expression
1 orim1i.1 . 2 (φψ)
2 id 19 . 2 (χχ)
31, 2orim12i 675 1 ((φ χ) → (ψ χ))
Colors of variables: wff set class
Syntax hints:  wi 4   wo 628
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-io 629
This theorem depends on definitions:  df-bi 110
This theorem is referenced by:  19.34  1571  dveeq2or  1694  sbequilem  1716  sbequi  1717  dvelimALT  1883  dvelimfv  1884  dvelimor  1891  r19.45av  2464  acexmidlemcase  5450  nnm1nn0  7979
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