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)) TDG 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)) graph: implies#(not(x),not(y)) -> implies#(y,and(x,y)) -> implies#(not(x),not(y)) -> implies#(y,and(x,y)) implies#(not(x),not(y)) -> implies#(y,and(x,y)) -> implies#(not(x),not(y)) -> and#(x,y) implies#(not(x),not(y)) -> implies#(y,and(x,y)) -> implies#(x,false()) -> not#(x) implies#(not(x),not(y)) -> implies#(y,and(x,y)) -> implies#(false(),y) -> not#(false()) SCC Processor: #sccs: 1 #rules: 1 #arcs: 4/16 DPs: 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) = 1x0 + x1, [implies](x0, x1) = 2x0 + x1 + 8, [not](x0) = 2x0, [and](x0, x1) = x0 + x1, [false] = 4 orientation: implies#(not(x),not(y)) = 3x + 2y >= x + 1y = implies#(y,and(x,y)) and(x,false()) = x + 4 >= 4 = false() and(x,not(false())) = x + 6 >= x = x not(not(x)) = 4x >= x = x implies(false(),y) = y + 8 >= 6 = not(false()) implies(x,false()) = 2x + 8 >= 2x = not(x) implies(not(x),not(y)) = 4x + 2y + 8 >= x + 2y + 8 = 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