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Mirrors > Home > ILE Home > Th. List > 19.42h | Unicode version |
Description: Theorem 19.42 of [Margaris] p. 90. New proofs should use 19.42 1667 instead. (Contributed by NM, 18-Aug-1993.) (New usage is discouraged.) |
Ref | Expression |
---|---|
19.42h.1 |
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Ref | Expression |
---|---|
19.42h |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 19.42h.1 |
. . 3
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2 | 1 | 19.41h 1664 |
. 2
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3 | exancom 1588 |
. 2
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4 | ancom 264 |
. 2
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5 | 2, 3, 4 | 3bitr4i 211 |
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 ax-5 1424 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-4 1488 ax-ial 1515 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: 19.42v 1879 |
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