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Mirrors > Home > NFE Home > Th. List > pm2.24 | Unicode version |
Description: Theorem *2.24 of [WhiteheadRussell] p. 104. (Contributed by NM, 3-Jan-2005.) |
Ref | Expression |
---|---|
pm2.24 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm2.21 100 |
. 2
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2 | 1 | com12 27 |
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 is referenced by: pm4.81 355 orc 374 pm2.82 825 dedlema 920 |
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