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Mirrors > Home > ILE Home > Th. List > imorr | Unicode version |
Description: Implication in terms of disjunction. One direction of theorem *4.6 of [WhiteheadRussell] p. 120. The converse holds for decidable propositions, as seen at imordc 897. (Contributed by Jim Kingdon, 21-Jul-2018.) |
Ref | Expression |
---|---|
imorr |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-in2 615 |
. 2
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2 | ax-1 6 |
. 2
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3 | 1, 2 | jaoi 716 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in2 615 ax-io 709 |
This theorem depends on definitions: df-bi 117 |
This theorem is referenced by: pm4.52im 750 nf4r 1671 |
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