6 lines
171 B
Text
6 lines
171 B
Text
import logic
|
|
|
|
theorem tst {A B : Bool} (H1 : A) (H2 : B) : A
|
|
:= by [echo "first try", show, now |
|
|
echo "second try", fail |
|
|
echo "third try", exact]
|