11 lines
285 B
Text
11 lines
285 B
Text
|
Definition f(a : Bool) : Bool := not a.
|
||
|
|
|
||
|
|
Theorem T (a b : Bool) : a \/ b => (f b) => a := _.
|
||
|
|
apply imp_tactic
|
||
|
|
apply imp_tactic
|
||
|
|
apply disj_hyp_tactic
|
||
|
|
apply (** unfold_tactic("f") **)
|
||
|
|
apply assumption_tactic
|
||
|
|
apply absurd_tactic
|
||
|
|
done
|
||
|
|
Show Environment 1.
|