9 lines
No EOL
139 B
Text
9 lines
No EOL
139 B
Text
Theorem T2 (a b : Bool) : b => a \/ b.
|
|
apply imp_tactic.
|
|
apply disj_tactic.
|
|
back.
|
|
back.
|
|
apply assumption_tactic.
|
|
done.
|
|
|
|
Show Environment 1. |