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Mirrors > Home > NFE Home > Th. List > com14 | Unicode version |
Description: Commutation of antecedents. Swap 1st and 4th. (Contributed by NM, 25-Apr-1994.) (Proof shortened by Wolf Lammen, 28-Jul-2012.) |
Ref | Expression |
---|---|
com4.1 |
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Ref | Expression |
---|---|
com14 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | com4.1 |
. . 3
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2 | 1 | com4l 78 |
. 2
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3 | 2 | com3r 73 |
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 |
This theorem is referenced by: (None) |
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