Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished
~~~(((q -> r) || F) /\ ((q -> r) || F)) || q || r
logic.propositional.idempand
~~~((q -> r) || F) || q || r
logic.propositional.defimpl
~~~(~q || r || F) || q || r
logic.propositional.falsezeroor
~~~(~q || r) || q || r