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Mirrors > Home > ILE Home > Th. List > im2anan9r | Unicode version |
Description: Deduction joining nested implications to form implication of conjunctions. (Contributed by NM, 29-Feb-1996.) |
Ref | Expression |
---|---|
im2an9.1 |
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im2an9.2 |
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Ref | Expression |
---|---|
im2anan9r |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | im2an9.1 |
. . 3
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2 | im2an9.2 |
. . 3
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3 | 1, 2 | im2anan9 598 |
. 2
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4 | 3 | ancoms 268 |
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 |
This theorem depends on definitions: df-bi 117 |
This theorem is referenced by: lbreu 8878 |
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