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| Description: Lemma for Godowski 6-var -> Mayet Example 3. |
| Ref | Expression |
|---|---|
| gomaex3lem3 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | anor1 80 |
. . . . 5
| |
| 2 | 1 | ax-r1 34 |
. . . 4
|
| 3 | df-i1 43 |
. . . . 5
| |
| 4 | 3 | ax-r4 36 |
. . . 4
|
| 5 | id 58 |
. . . 4
| |
| 6 | 2, 4, 5 | 3tr1 60 |
. . 3
|
| 7 | 6 | ax-r5 37 |
. 2
|
| 8 | coman1 177 |
. . 3
| |
| 9 | comid 179 |
. . . 4
| |
| 10 | 9 | comcom2 175 |
. . 3
|
| 11 | 8, 10 | fh3r 457 |
. 2
|
| 12 | a5b 112 |
. . . 4
| |
| 13 | ax-a2 30 |
. . . . 5
| |
| 14 | df-t 40 |
. . . . . 6
| |
| 15 | 14 | ax-r1 34 |
. . . . 5
|
| 16 | 13, 15 | ax-r2 35 |
. . . 4
|
| 17 | 12, 16 | 2an 72 |
. . 3
|
| 18 | an1 98 |
. . 3
| |
| 19 | 17, 18 | ax-r2 35 |
. 2
|
| 20 | 7, 11, 19 | 3tr 62 |
1
|
| Colors of variables: term |
| Syntax hints: |
| This theorem is referenced by: gomaex3lem7 900 |
| 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-i1 43 df-le1 122 df-le2 123 df-c1 124 df-c2 125 |