Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > nottru | Unicode version |
Description: A identity. (Contributed by Anthony Hart, 22-Oct-2010.) |
Ref | Expression |
---|---|
nottru |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-fal 1290 | . 2 | |
2 | 1 | bicomi 130 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wb 103 wtru 1285 wfal 1289 |
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-fal 1290 |
This theorem is referenced by: truxortru 1350 |
Copyright terms: Public domain | W3C validator |