Exercise logic.propositional.consequence
Description
Prove that formula is a logical consequence of a set of formulas
Derivation
Final term is not finished
q <-> s => (p /\ q /\ p /\ s) || ((~p || ~q) /\ ~(p /\ s))
⇒ logic.propositional.demorganandq <-> s => (p /\ q /\ p /\ s) || ((~p || ~q) /\ (~p || ~s))
⇒ absorpand-subsetq <-> s => (p /\ q /\ s) || ((~p || ~q) /\ (~p || ~s))