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| Description: Lemma for Kalmbach implication study. |
| Ref | Expression |
|---|---|
| u3lemana |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-i3 45 |
. . 3
| |
| 2 | 1 | ran 71 |
. 2
|
| 3 | comanr1 446 |
. . . . 5
| |
| 4 | comanr1 446 |
. . . . 5
| |
| 5 | 3, 4 | com2or 465 |
. . . 4
|
| 6 | comid 179 |
. . . . . 6
| |
| 7 | 6 | comcom3 436 |
. . . . 5
|
| 8 | comorr 176 |
. . . . 5
| |
| 9 | 7, 8 | com2an 466 |
. . . 4
|
| 10 | 5, 9 | fh1r 455 |
. . 3
|
| 11 | lea 152 |
. . . . . . 7
| |
| 12 | lea 152 |
. . . . . . 7
| |
| 13 | 11, 12 | lel2or 162 |
. . . . . 6
|
| 14 | 13 | df2le2 128 |
. . . . 5
|
| 15 | an32 76 |
. . . . . 6
| |
| 16 | ancom 68 |
. . . . . . 7
| |
| 17 | dff 93 |
. . . . . . . . . 10
| |
| 18 | 17 | ax-r1 34 |
. . . . . . . . 9
|
| 19 | 18 | lan 70 |
. . . . . . . 8
|
| 20 | an0 100 |
. . . . . . . 8
| |
| 21 | 19, 20 | ax-r2 35 |
. . . . . . 7
|
| 22 | 16, 21 | ax-r2 35 |
. . . . . 6
|
| 23 | 15, 22 | ax-r2 35 |
. . . . 5
|
| 24 | 14, 23 | 2or 67 |
. . . 4
|
| 25 | or0 94 |
. . . 4
| |
| 26 | 24, 25 | ax-r2 35 |
. . 3
|
| 27 | 10, 26 | ax-r2 35 |
. 2
|
| 28 | 2, 27 | ax-r2 35 |
1
|
| Colors of variables: term |
| Syntax hints: |
| This theorem is referenced by: u3lemnoa 644 u3lem13a 771 u3lem13b 772 |
| 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 |