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| Mirrors > Home > NFE Home > Th. List > merco1lem17 | Unicode version | ||
| Description: Used to rederive the Tarski-Bernays-Wajsberg axioms from merco1 1478. (Contributed by Anthony Hart, 18-Sep-2011.) (Proof modification is discouraged.) (New usage is discouraged.) | 
| Ref | Expression | 
|---|---|
| merco1lem17 | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | merco1lem11 1492 | 
. . . . . 6
 | |
| 2 | merco1lem7 1487 | 
. . . . . . . 8
 | |
| 3 | merco1 1478 | 
. . . . . . . 8
 | |
| 4 | 2, 3 | ax-mp 5 | 
. . . . . . 7
 | 
| 5 | merco1lem9 1490 | 
. . . . . . 7
 | |
| 6 | 4, 5 | ax-mp 5 | 
. . . . . 6
 | 
| 7 | 1, 6 | ax-mp 5 | 
. . . . 5
 | 
| 8 | merco1 1478 | 
. . . . 5
 | |
| 9 | 7, 8 | ax-mp 5 | 
. . . 4
 | 
| 10 | merco1lem11 1492 | 
. . . . . 6
 | |
| 11 | merco1lem7 1487 | 
. . . . . . . 8
 | |
| 12 | merco1 1478 | 
. . . . . . . 8
 | |
| 13 | 11, 12 | ax-mp 5 | 
. . . . . . 7
 | 
| 14 | merco1lem9 1490 | 
. . . . . . 7
 | |
| 15 | 13, 14 | ax-mp 5 | 
. . . . . 6
 | 
| 16 | 10, 15 | ax-mp 5 | 
. . . . 5
 | 
| 17 | merco1 1478 | 
. . . . 5
 | |
| 18 | 16, 17 | ax-mp 5 | 
. . . 4
 | 
| 19 | 9, 18 | ax-mp 5 | 
. . 3
 | 
| 20 | merco1lem4 1484 | 
. . 3
 | |
| 21 | merco1lem16 1497 | 
. . 3
 | |
| 22 | 19, 20, 21 | mpsyl 59 | 
. 2
 | 
| 23 | merco1 1478 | 
. 2
 | |
| 24 | 22, 23 | ax-mp 5 | 
1
 | 
| Colors of variables: wff setvar class | 
| Syntax hints:     | 
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 | 
| This theorem depends on definitions: df-bi 177 df-tru 1319 df-fal 1320 | 
| This theorem is referenced by: merco1lem18 1499 | 
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