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Mirrors > Home > ILE Home > Th. List > fal | Unicode version |
Description: The truth value ![]() |
Ref | Expression |
---|---|
fal |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tru 1368 |
. . 3
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2 | 1 | notnoti 646 |
. 2
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3 | df-fal 1370 |
. 2
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4 | 2, 3 | mtbir 672 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 |
This theorem depends on definitions: df-bi 117 df-tru 1367 df-fal 1370 |
This theorem is referenced by: nbfal 1375 bifal 1377 falim 1378 dfnot 1382 notfal 1425 alnex 1510 csbprc 3483 bj-stfal 14931 bj-dcfal 14944 bdnth 15023 |
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