MAYBE 0.08/0.18 MAYBE 0.08/0.18 0.08/0.18 Problem: 0.08/0.18 not(not(x)) -> x 0.08/0.18 not(or(x,y)) -> and(not(x),not(y)) 0.08/0.18 not(and(x,y)) -> or(not(x),not(y)) 0.08/0.18 and(x,or(y,z)) -> or(and(x,y),and(x,z)) 0.08/0.18 and(or(y,z),x) -> or(and(x,y),and(x,z)) 0.08/0.18 0.08/0.18 Proof: 0.08/0.18 Open 0.08/0.18 EOF