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Mirrors > Home > MPE Home > Th. List > Mathboxes > bj-falor | Structured version Visualization version Unicode version |
Description: Dual of truan 1501 (which has biconditional reversed). (Contributed by BJ, 26-Oct-2019.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
bj-falor |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fal 1490 | . 2 | |
2 | 1 | bj-biorfi 32568 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wb 196 wo 383 wfal 1488 |
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 197 df-or 385 df-tru 1486 df-fal 1489 |
This theorem is referenced by: (None) |
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