Exercise logic.propositional.consequence
Description
Prove that formula is a logical consequence of a set of formulas
p <-> r, q <-> s => ((p /\ q /\ r /\ s) || ~(p /\ q)) /\ (p || ~(r /\ s)) /\ (q || ~r || ~s) /\ (r || ~(r /\ s)) /\ (s || ~(r /\ s))
ready: noFeedback
Environment
initial=TList [TCon logic1.equivalent [TVar "p",TVar "r"],TCon logic1.equivalent [TVar "q",TVar "s"]]Path 1
path | [0, 0, 4, 0, 0, 3, 0, 0, 0, 0, 2, 0, 0, 4, 4, 5, 3] |
steps | 17 |
major rules | 1 |
active labels |
|