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Mirrors > Home > ILE Home > Th. List > pm5.501 | Unicode version |
Description: Theorem *5.501 of [WhiteheadRussell] p. 125. (Contributed by NM, 3-Jan-2005.) (Revised by NM, 24-Jan-2013.) |
Ref | Expression |
---|---|
pm5.501 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm5.1im 172 |
. 2
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2 | bi1 117 |
. . 3
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3 | 2 | com12 30 |
. 2
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4 | 1, 3 | impbid 128 |
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 105 ax-ia2 106 ax-ia3 107 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: ibib 244 ibibr 245 pm5.1 591 pm5.18dc 869 biassdc 1374 |
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