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| Mirrors > Home > HOLE Home > Th. List > tru | Unicode version | ||
| Description: Tautology is provable. |
| Ref | Expression |
|---|---|
| tru |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | wtru 40 |
. 2
| |
| 2 | 1 | id 25 |
1
|
| Colors of variables: type var term |
| Syntax hints: |
| This theorem was proved from axioms: ax-id 24 ax-cb1 29 ax-refl 39 |
| This theorem is referenced by: eqtru 76 |
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