Exercise logic.propositional.consequence
Description
Prove that formula is a logical consequence of a set of formulas
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
(~p /\ q) || ((~q || r) /\ q) => p -> r
⇒ fakeabsorption(~p /\ q) || (r /\ q) => p -> r
Description
Prove that formula is a logical consequence of a set of formulas