8 lines
256 B
Text
8 lines
256 B
Text
import logic
|
|
open tactic
|
|
constant p : num → num → num → Prop
|
|
axiom H1 : ∃ x y z, p x y z
|
|
axiom H2 : ∀ {x y z : num}, p x y z → p x x x
|
|
theorem tst : ∃ x, p x x x
|
|
:= obtain a b c H, from H1,
|
|
by (apply exists.intro; apply H2; eassumption)
|