Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished
¬(p ∨ F ∨ ¬q) ↔ ((r ↔ s) ∨ ¬s)
logic.propositional.falsezeroor
¬(p ∨ ¬q) ↔ ((r ↔ s) ∨ ¬s)