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Theorem orim1i 734
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 ((𝜑𝜒) → (𝜓𝜒))

Proof of Theorem orim1i
StepHypRef Expression
1 orim1i.1 . 2 (𝜑𝜓)
2 id 19 . 2 (𝜒𝜒)
31, 2orim12i 733 1 ((𝜑𝜒) → (𝜓𝜒))
Colors of variables: wff set class
Syntax hints:  wi 4  wo 682
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 683
This theorem depends on definitions:  df-bi 116
This theorem is referenced by:  19.34  1647  dveeq2or  1772  sbequilem  1794  sbequi  1795  dvelimALT  1963  dvelimfv  1964  dvelimor  1971  r19.45av  2568  acexmidlemcase  5737  nnm1nn0  8986  triap  13151
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