Description: Used to rederive the Tarski-Bernays-Wajsberg axioms from merco1 . (Contributed by Anthony Hart, 17-Sep-2011) (Proof modification is discouraged.) (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Assertion | merco1lem6 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | merco1lem5 | |
|
2 | merco1lem3 | |
|
3 | 1 2 | ax-mp | |
4 | merco1lem5 | |
|
5 | 3 4 | ax-mp | |
6 | merco1lem3 | |
|
7 | 5 6 | ax-mp | |
8 | merco1 | |
|
9 | 7 8 | ax-mp | |