YES Problem: and(x,false()) -> false() and(x,not(false())) -> x not(not(x)) -> x implies(false(),y) -> not(false()) implies(x,false()) -> not(x) implies(not(x),not(y)) -> implies(y,and(x,y)) Proof: DP Processor: DPs: implies#(false(),y) -> not#(false()) implies#(x,false()) -> not#(x) implies#(not(x),not(y)) -> and#(x,y) implies#(not(x),not(y)) -> implies#(y,and(x,y)) TRS: and(x,false()) -> false() and(x,not(false())) -> x not(not(x)) -> x implies(false(),y) -> not(false()) implies(x,false()) -> not(x) implies(not(x),not(y)) -> implies(y,and(x,y)) Arctic Interpretation Processor: dimension: 1 interpretation: [implies#](x0, x1) = 3x0 + 3x1 + 0, [not#](x0) = 0, [and#](x0, x1) = x1, [implies](x0, x1) = 5x0 + 4x1 + 0, [not](x0) = 2x0 + 1, [and](x0, x1) = 1x0 + 1x1 + 0, [false] = 0 orientation: implies#(false(),y) = 3y + 3 >= 0 = not#(false()) implies#(x,false()) = 3x + 3 >= 0 = not#(x) implies#(not(x),not(y)) = 5x + 5y + 4 >= y = and#(x,y) implies#(not(x),not(y)) = 5x + 5y + 4 >= 4x + 4y + 3 = implies#(y,and(x,y)) and(x,false()) = 1x + 1 >= 0 = false() and(x,not(false())) = 1x + 3 >= x = x not(not(x)) = 4x + 3 >= x = x implies(false(),y) = 4y + 5 >= 2 = not(false()) implies(x,false()) = 5x + 4 >= 2x + 1 = not(x) implies(not(x),not(y)) = 7x + 6y + 6 >= 5x + 5y + 4 = implies(y,and(x,y)) problem: DPs: TRS: and(x,false()) -> false() and(x,not(false())) -> x not(not(x)) -> x implies(false(),y) -> not(false()) implies(x,false()) -> not(x) implies(not(x),not(y)) -> implies(y,and(x,y)) Qed