Description: First property of three of the provability predicate. (Contributed by BJ, 3-Apr-2019)
Ref | Expression | ||
---|---|---|---|
Hypothesis | ax-prv1.1 | |- ph |
|
Assertion | ax-prv1 | |- Prv ph |
Step | Hyp | Ref | Expression |
---|---|---|---|
0 | wph | |- ph |
|
1 | 0 | cprvb | |- Prv ph |