Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished
~(q -> r) || q || ((r || ~(q -> r) || q || r) /\ T)
logic.propositional.truezeroand
~(q -> r) || q || r || ~(q -> r) || q || r
logic.propositional.defimpl
~(q -> r) || q || r || ~(~q || r) || q || r
logic.propositional.demorganor
~(q -> r) || q || r || (~~q /\ ~r) || q || r
logic.propositional.notnot
~(q -> r) || q || r || (q /\ ~r) || q || r
logic.propositional.absorpor
~(q -> r) || q || r || q || r