Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished
¬(q → p) ↔ (((r ↔ s) ∨ ¬s) ∧ (((r ↔ s) ∧ (r ↔ s)) ∨ ¬s))
logic.propositional.idempand
¬(q → p) ↔ (((r ↔ s) ∨ ¬s) ∧ ((r ↔ s) ∨ ¬s))
logic.propositional.defequiv
¬(q → p) ↔ (((r ↔ s) ∨ ¬s) ∧ ((r ∧ s) ∨ (¬r ∧ ¬s) ∨ ¬s))