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| Description: Re-derivation of ax-7 1304 from ax67 1367. Note that ax-6o 1324 and ax-7 1304 are not used by the re-derivation. |
| Ref | Expression |
|---|---|
| ax67to7 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax67to6 1368 |
. . 3
| |
| 2 | 1 | con4i 90 |
. 2
|
| 3 | ax67 1367 |
. . 3
| |
| 4 | 3 | alimi 1338 |
. 2
|
| 5 | 2, 4 | syl 12 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-4 1319 ax-5o 1321 ax-6o 1324 |