Exercise logic.propositional.consequence
Description
Prove that formula is a logical consequence of a set of formulas
![](http://ideas.cs.uu.nl/images/external.png)
p <-> r, q <-> s => ((p /\ q /\ r /\ s) || ~(p /\ q)) /\ (p || ~r || ~s) /\ (q || ~r || ~s) /\ (r || ~r || ~s) /\ (s || ~r || ~s)
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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, 1, 4, 4, 5, 3, 0, 0, 1, 5, 1] |
steps | 20 |
major rules | 2 |
active labels |
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