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| Description: Lemma for unified disjunction. |
| Ref | Expression |
|---|---|
| ud3lem3d |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-i3 45 |
. . 3
| |
| 2 | ud3lem3c 556 |
. . 3
| |
| 3 | 1, 2 | 2an 72 |
. 2
|
| 4 | comor1 443 |
. . . . . . 7
| |
| 5 | 4 | comcom2 175 |
. . . . . 6
|
| 6 | comor2 444 |
. . . . . 6
| |
| 7 | 5, 6 | com2an 466 |
. . . . 5
|
| 8 | 6 | comcom2 175 |
. . . . . 6
|
| 9 | 5, 8 | com2an 466 |
. . . . 5
|
| 10 | 7, 9 | com2or 465 |
. . . 4
|
| 11 | 5, 6 | com2or 465 |
. . . . 5
|
| 12 | 4, 11 | com2an 466 |
. . . 4
|
| 13 | 10, 12 | fh1r 455 |
. . 3
|
| 14 | coman1 177 |
. . . . . . . . 9
| |
| 15 | 14 | comcom7 442 |
. . . . . . . 8
|
| 16 | coman2 178 |
. . . . . . . 8
| |
| 17 | 15, 16 | com2or 465 |
. . . . . . 7
|
| 18 | 16 | comcom2 175 |
. . . . . . . 8
|
| 19 | 14, 18 | com2an 466 |
. . . . . . 7
|
| 20 | 17, 19 | fh2r 456 |
. . . . . 6
|
| 21 | lear 153 |
. . . . . . . . . 10
| |
| 22 | leor 151 |
. . . . . . . . . 10
| |
| 23 | 21, 22 | letr 129 |
. . . . . . . . 9
|
| 24 | 23 | df2le2 128 |
. . . . . . . 8
|
| 25 | oran 79 |
. . . . . . . . . 10
| |
| 26 | 25 | lan 70 |
. . . . . . . . 9
|
| 27 | dff 93 |
. . . . . . . . . 10
| |
| 28 | 27 | ax-r1 34 |
. . . . . . . . 9
|
| 29 | 26, 28 | ax-r2 35 |
. . . . . . . 8
|
| 30 | 24, 29 | 2or 67 |
. . . . . . 7
|
| 31 | or0 94 |
. . . . . . 7
| |
| 32 | 30, 31 | ax-r2 35 |
. . . . . 6
|
| 33 | 20, 32 | ax-r2 35 |
. . . . 5
|
| 34 | 33 | ax-r5 37 |
. . . 4
|
| 35 | lea 152 |
. . . . . . 7
| |
| 36 | leo 150 |
. . . . . . 7
| |
| 37 | 35, 36 | letr 129 |
. . . . . 6
|
| 38 | 37 | df2le2 128 |
. . . . 5
|
| 39 | 38 | lor 66 |
. . . 4
|
| 40 | 34, 39 | ax-r2 35 |
. . 3
|
| 41 | 13, 40 | ax-r2 35 |
. 2
|
| 42 | 3, 41 | ax-r2 35 |
1
|
| Colors of variables: term |
| Syntax hints: |
| This theorem is referenced by: ud3lem3 558 |
| 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 |