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Mirrors > Home > NFE Home > Th. List > luklem4 | Unicode version |
Description: Used to rederive standard propositional axioms from Lukasiewicz'. (Contributed by NM, 22-Dec-2002.) (Proof modification is discouraged.) (New usage is discouraged.) |
Ref | Expression |
---|---|
luklem4 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | luk-2 1421 |
. . . 4
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2 | luk-2 1421 |
. . . . 5
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3 | luklem3 1425 |
. . . . 5
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4 | 2, 3 | ax-mp 5 |
. . . 4
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5 | 1, 4 | ax-mp 5 |
. . 3
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6 | luk-1 1420 |
. . 3
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7 | 5, 6 | ax-mp 5 |
. 2
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8 | luk-2 1421 |
. 2
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9 | 7, 8 | luklem1 1423 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-meredith 1406 |
This theorem is referenced by: luklem5 1427 luklem6 1428 ax3 1433 |
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