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Mirrors > Home > NFE Home > Th. List > exbir | Unicode version |
Description: Exportation implication also converting head from biconditional to conditional. This proof is exbirVD in set.mm automatically translated and minimized. (Contributed by Alan Sare, 31-Dec-2011.) (New usage is discouraged.) TODO: decide if this is worth keeping. |
Ref | Expression |
---|---|
exbir |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bi2 189 | . . 3 | |
2 | 1 | imim2i 13 | . 2 |
3 | 2 | exp3a 425 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 176 wa 358 |
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-an 360 |
This theorem is referenced by: (None) |
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