theorem anw7l (a b c d e f g h i: wff):
$ a -> i $ >
$ a /\ b /\ c /\ d /\ e /\ f /\ g /\ h -> i $;
| Step | Hyp | Ref | Expression |
|---|
| 1 |
|
hyp x |
a -> i |
| 2 |
1 |
anwl |
a /\ b -> i |
| 3 |
2 |
anw6l |
a /\ b /\ c /\ d /\ e /\ f /\ g /\ h -> i |
Axiom use
axs_prop_calc
(ax_1,
ax_2,
ax_3,
ax_mp)