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| Description: Lemma for unified disjunction. |
| Ref | Expression |
|---|---|
| ud3lem1d |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-i3 45 |
. . 3
| |
| 2 | ud3lem1c 550 |
. . 3
| |
| 3 | 1, 2 | 2an 72 |
. 2
|
| 4 | comor1 443 |
. . . . . . 7
| |
| 5 | 4 | comcom2 175 |
. . . . . 6
|
| 6 | comor2 444 |
. . . . . . 7
| |
| 7 | 6 | comcom7 442 |
. . . . . 6
|
| 8 | 5, 7 | com2an 466 |
. . . . 5
|
| 9 | 5, 6 | com2an 466 |
. . . . 5
|
| 10 | 8, 9 | com2or 465 |
. . . 4
|
| 11 | 5, 7 | com2or 465 |
. . . . 5
|
| 12 | 4, 11 | com2an 466 |
. . . 4
|
| 13 | 10, 12 | fh1r 455 |
. . 3
|
| 14 | 8, 9 | fh1r 455 |
. . . . 5
|
| 15 | an32 76 |
. . . . . 6
| |
| 16 | a5c 113 |
. . . . . . 7
| |
| 17 | 16 | ran 71 |
. . . . . 6
|
| 18 | 15, 17 | ax-r2 35 |
. . . . 5
|
| 19 | 14, 18 | 2or 67 |
. . . 4
|
| 20 | ancom 68 |
. . . . . . . 8
| |
| 21 | anor2 81 |
. . . . . . . . . 10
| |
| 22 | 21 | lan 70 |
. . . . . . . . 9
|
| 23 | dff 93 |
. . . . . . . . . 10
| |
| 24 | 23 | ax-r1 34 |
. . . . . . . . 9
|
| 25 | 22, 24 | ax-r2 35 |
. . . . . . . 8
|
| 26 | 20, 25 | ax-r2 35 |
. . . . . . 7
|
| 27 | lear 153 |
. . . . . . . . 9
| |
| 28 | leor 151 |
. . . . . . . . 9
| |
| 29 | 27, 28 | letr 129 |
. . . . . . . 8
|
| 30 | 29 | df2le2 128 |
. . . . . . 7
|
| 31 | 26, 30 | 2or 67 |
. . . . . 6
|
| 32 | or0r 95 |
. . . . . 6
| |
| 33 | 31, 32 | ax-r2 35 |
. . . . 5
|
| 34 | 33 | ax-r5 37 |
. . . 4
|
| 35 | 19, 34 | ax-r2 35 |
. . 3
|
| 36 | 13, 35 | ax-r2 35 |
. 2
|
| 37 | 3, 36 | ax-r2 35 |
1
|
| Colors of variables: term |
| Syntax hints: |
| This theorem is referenced by: ud3lem1 552 |
| 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 |