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| Mirrors > Home > QLE Home > Th. List > u4lemc4 | Unicode version | ||
| Description: Lemma for non-tollens implication study. |
| Ref | Expression |
|---|---|
| ulemc3.1 |
|
| Ref | Expression |
|---|---|
| u4lemc4 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-i4 47 |
. 2
| |
| 2 | ulemc3.1 |
. . . . . . 7
| |
| 3 | comid 187 |
. . . . . . . 8
| |
| 4 | 3 | comcom2 183 |
. . . . . . 7
|
| 5 | 2, 4 | fh2r 474 |
. . . . . 6
|
| 6 | 5 | ax-r1 35 |
. . . . 5
|
| 7 | ancom 74 |
. . . . . 6
| |
| 8 | df-t 41 |
. . . . . . . . 9
| |
| 9 | 8 | ax-r1 35 |
. . . . . . . 8
|
| 10 | 9 | lan 77 |
. . . . . . 7
|
| 11 | an1 106 |
. . . . . . 7
| |
| 12 | 10, 11 | ax-r2 36 |
. . . . . 6
|
| 13 | 7, 12 | ax-r2 36 |
. . . . 5
|
| 14 | 6, 13 | ax-r2 36 |
. . . 4
|
| 15 | 2 | comcom4 455 |
. . . . . 6
|
| 16 | 2 | comcom3 454 |
. . . . . 6
|
| 17 | 15, 16 | fh2r 474 |
. . . . 5
|
| 18 | dff 101 |
. . . . . . . 8
| |
| 19 | 18 | ax-r1 35 |
. . . . . . 7
|
| 20 | 19 | lor 70 |
. . . . . 6
|
| 21 | or0 102 |
. . . . . 6
| |
| 22 | 20, 21 | ax-r2 36 |
. . . . 5
|
| 23 | 17, 22 | ax-r2 36 |
. . . 4
|
| 24 | 14, 23 | 2or 72 |
. . 3
|
| 25 | 16, 15 | fh4 472 |
. . . 4
|
| 26 | ax-a2 31 |
. . . . . 6
| |
| 27 | df-t 41 |
. . . . . . 7
| |
| 28 | 27 | ax-r1 35 |
. . . . . 6
|
| 29 | 26, 28 | 2an 79 |
. . . . 5
|
| 30 | an1 106 |
. . . . 5
| |
| 31 | 29, 30 | ax-r2 36 |
. . . 4
|
| 32 | 25, 31 | ax-r2 36 |
. . 3
|
| 33 | 24, 32 | ax-r2 36 |
. 2
|
| 34 | 1, 33 | ax-r2 36 |
1
|
| Colors of variables: term |
| Syntax hints: |
| This theorem was proved from axioms: ax-a1 30 ax-a2 31 ax-a3 32 ax-a4 33 ax-a5 34 ax-r1 35 ax-r2 36 ax-r4 37 ax-r5 38 ax-r3 439 |
| This theorem depends on definitions: df-b 39 df-a 40 df-t 41 df-f 42 df-i4 47 df-le1 130 df-le2 131 df-c1 132 df-c2 133 |
| This theorem is referenced by: u4lemle1 713 u4lem2 747 u4lem3 752 |
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