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Mirrors > Home > NFE Home > Th. List > pm3.48 | Unicode version |
Description: Theorem *3.48 of [WhiteheadRussell] p. 114. (Contributed by NM, 28-Jan-1997.) |
Ref | Expression |
---|---|
pm3.48 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | orc 374 |
. . 3
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2 | 1 | imim2i 13 |
. 2
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3 | olc 373 |
. . 3
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4 | 3 | imim2i 13 |
. 2
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5 | 2, 4 | jaao 495 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 177 df-or 359 df-an 360 |
This theorem is referenced by: orim12d 811 |
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