Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

¬((r ∧ ((r ∧ r) ∨ (¬r ∧ ¬r))) ∨ (r ∧ ((r ∧ r) ∨ (¬r ∧ ¬r))))
logic.propositional.idempor
¬(r ∧ ((r ∧ r) ∨ (¬r ∧ ¬r)))
logic.propositional.idempand
¬(r ∧ (r ∨ (¬r ∧ ¬r)))
logic.propositional.absorpand
¬r