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| Description: Show that the original
axiom ax-6o 1019 can be derived from ax-6 1002
and
others. See ax6 1020 for the rederivation of ax-6 1002
from ax-6o 1019.
This theorem should not be referenced in any proof. Instead, use ax-6o 1019 below so that uses of ax-6o 1019 can be more easily identified. |
| Ref | Expression |
|---|---|
| ax6o |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-4 1014 |
. 2
| |
| 2 | ax-6 1002 |
. 2
| |
| 3 | 1, 2 | nsyl4 126 |
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-6 1002 ax-4 1014 |