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Theorem jaob 630
Description: Disjunction of antecedents. Compare Theorem *4.77 of [WhiteheadRussell] p. 121. (Contributed by NM, 30-May-1994.) (Revised by Mario Carneiro, 31-Jan-2015.)
Assertion
Ref Expression
jaob

Proof of Theorem jaob
StepHypRef Expression
1 ax-io 629 1
Colors of variables: wff set class
Syntax hints:   wi 4   wa 97   wb 98   wo 628
This theorem was proved from axioms:  ax-io 629
This theorem is referenced by:  olc  631  orc  632  pm3.44  634  pm4.77  711  pm5.53  714  unss  3111  ralunb  3118  intun  3637  intpr  3638  relop  4429  indstr  8292
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