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Theorem orim1d 777
Description: Disjoin antecedents and consequents in a deduction. (Contributed by NM, 23-Apr-1995.)
Hypothesis
Ref Expression
orim1d.1  |-  ( ph  ->  ( ps  ->  ch ) )
Assertion
Ref Expression
orim1d  |-  ( ph  ->  ( ( ps  \/  th )  ->  ( ch  \/  th ) ) )

Proof of Theorem orim1d
StepHypRef Expression
1 orim1d.1 . 2  |-  ( ph  ->  ( ps  ->  ch ) )
2 idd 21 . 2  |-  ( ph  ->  ( th  ->  th )
)
31, 2orim12d 776 1  |-  ( ph  ->  ( ( ps  \/  th )  ->  ( ch  \/  th ) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    \/ wo 698
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 699
This theorem depends on definitions:  df-bi 116
This theorem is referenced by:  pm2.38  793  pm2.73  796  pm2.74  797  pm2.8  800  pm2.82  802  unss1  3277  acexmidlemcase  5821  exmidomniim  7086  nn0ge2m1nn  9155  exmidsbthrlem  13664
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