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Mirrors > Home > ILE Home > Th. List > dftru2 | Unicode version |
Description: An alternate definition of "true". (Contributed by Anthony Hart, 13-Oct-2010.) (Revised by BJ, 12-Jul-2019.) (New usage is discouraged.) |
Ref | Expression |
---|---|
dftru2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tru 1288 | . 2 | |
2 | id 19 | . 2 | |
3 | 1, 2 | 2th 172 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 103 wtru 1285 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 |
This theorem depends on definitions: df-bi 115 df-tru 1287 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |