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Mirrors > Home > ILE Home > Th. List > pm4.82 | Unicode version |
Description: Theorem *4.82 of [WhiteheadRussell] p. 122. (Contributed by NM, 3-Jan-2005.) |
Ref | Expression |
---|---|
pm4.82 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm2.65 585 |
. . 3
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2 | 1 | imp 115 |
. 2
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3 | pm2.21 547 |
. . 3
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4 | pm2.21 547 |
. . 3
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5 | 3, 4 | jca 290 |
. 2
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6 | 2, 5 | impbii 117 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() |
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-in1 544 ax-in2 545 |
This theorem depends on definitions: df-bi 110 |
This theorem is referenced by: (None) |
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