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Mirrors > Home > NFE Home > Th. List > tbw-ax3 | Unicode version |
Description: The third of four axioms in the Tarski-Bernays-Wajsberg system. (Contributed by Anthony Hart, 13-Aug-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
Ref | Expression |
---|---|
tbw-ax3 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | peirce 172 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem is referenced by: tbwlem1 1470 tbwlem3 1472 re1luk2 1476 |
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