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| Description: Lemma for Kalmbach implication study. |
| Ref | Expression |
|---|---|
| u3lemob |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-i3 45 |
. . 3
| |
| 2 | 1 | ax-r5 37 |
. 2
|
| 3 | or32 75 |
. . 3
| |
| 4 | or32 75 |
. . . . . 6
| |
| 5 | lear 153 |
. . . . . . . 8
| |
| 6 | 5 | df-le2 123 |
. . . . . . 7
|
| 7 | 6 | ax-r5 37 |
. . . . . 6
|
| 8 | 4, 7 | ax-r2 35 |
. . . . 5
|
| 9 | ancom 68 |
. . . . 5
| |
| 10 | 8, 9 | 2or 67 |
. . . 4
|
| 11 | comor2 444 |
. . . . . . 7
| |
| 12 | comor1 443 |
. . . . . . . 8
| |
| 13 | 11 | comcom2 175 |
. . . . . . . 8
|
| 14 | 12, 13 | com2an 466 |
. . . . . . 7
|
| 15 | 11, 14 | com2or 465 |
. . . . . 6
|
| 16 | 12 | comcom7 442 |
. . . . . 6
|
| 17 | 15, 16 | fh4 454 |
. . . . 5
|
| 18 | or32 75 |
. . . . . . . 8
| |
| 19 | or12 73 |
. . . . . . . . . . 11
| |
| 20 | oridm 102 |
. . . . . . . . . . . 12
| |
| 21 | 20 | lor 66 |
. . . . . . . . . . 11
|
| 22 | 19, 21 | ax-r2 35 |
. . . . . . . . . 10
|
| 23 | 22 | ax-r5 37 |
. . . . . . . . 9
|
| 24 | ax-a2 30 |
. . . . . . . . . 10
| |
| 25 | lea 152 |
. . . . . . . . . . . 12
| |
| 26 | leo 150 |
. . . . . . . . . . . 12
| |
| 27 | 25, 26 | letr 129 |
. . . . . . . . . . 11
|
| 28 | 27 | df-le2 123 |
. . . . . . . . . 10
|
| 29 | 24, 28 | ax-r2 35 |
. . . . . . . . 9
|
| 30 | 23, 29 | ax-r2 35 |
. . . . . . . 8
|
| 31 | 18, 30 | ax-r2 35 |
. . . . . . 7
|
| 32 | or32 75 |
. . . . . . . 8
| |
| 33 | ancom 68 |
. . . . . . . . . . 11
| |
| 34 | oran 79 |
. . . . . . . . . . . . 13
| |
| 35 | 34 | con2 64 |
. . . . . . . . . . . 12
|
| 36 | 35 | ax-r1 34 |
. . . . . . . . . . 11
|
| 37 | 33, 36 | ax-r2 35 |
. . . . . . . . . 10
|
| 38 | 37 | lor 66 |
. . . . . . . . 9
|
| 39 | df-t 40 |
. . . . . . . . . 10
| |
| 40 | 39 | ax-r1 34 |
. . . . . . . . 9
|
| 41 | 38, 40 | ax-r2 35 |
. . . . . . . 8
|
| 42 | 32, 41 | ax-r2 35 |
. . . . . . 7
|
| 43 | 31, 42 | 2an 72 |
. . . . . 6
|
| 44 | an1 98 |
. . . . . 6
| |
| 45 | 43, 44 | ax-r2 35 |
. . . . 5
|
| 46 | 17, 45 | ax-r2 35 |
. . . 4
|
| 47 | 10, 46 | ax-r2 35 |
. . 3
|
| 48 | 3, 47 | ax-r2 35 |
. 2
|
| 49 | 2, 48 | ax-r2 35 |
1
|
| Colors of variables: term |
| Syntax hints: |
| This theorem is referenced by: u3lemnanb 639 neg3antlem2 847 |
| This theorem was proved from axioms: ax-a1 29 ax-a2 30 ax-a3 31 ax-a4 32 ax-a5 33 ax-r1 34 ax-r2 35 ax-r4 36 ax-r5 37 ax-r3 421 |
| This theorem depends on definitions: df-b 38 df-a 39 df-t 40 df-f 41 df-i3 45 df-le1 122 df-le2 123 df-c1 124 df-c2 125 |