YES Problem: strict: f(x,0()) -> s(x) g(x) -> h(x,gen()) h(0(),x) -> f(x,x) a() -> b() weak: gen() -> s(gen()) Proof: Matrix Interpretation Processor: dim=2 interpretation: [1] [gen] = [1], [2 0] [1 0] [2] [f](x0, x1) = [0 0]x0 + [0 0]x1 + [0], [2 0] [3] [g](x0) = [0 0]x0 + [0], [2 0] [3 0] [h](x0, x1) = [0 0]x0 + [0 0]x1, [1] [0] = [0], [0] [b] = [0], [0] [a] = [0], [1 0] [s](x0) = [0 0]x0 orientation: [2 0] [3] [1 0] f(x,0()) = [0 0]x + [0] >= [0 0]x = s(x) [2 0] [3] [2 0] [3] g(x) = [0 0]x + [0] >= [0 0]x + [0] = h(x,gen()) [3 0] [2] [3 0] [2] h(0(),x) = [0 0]x + [0] >= [0 0]x + [0] = f(x,x) [0] [0] a() = [0] >= [0] = b() [1] [1] gen() = [1] >= [0] = s(gen()) problem: strict: g(x) -> h(x,gen()) h(0(),x) -> f(x,x) a() -> b() weak: gen() -> s(gen()) Matrix Interpretation Processor: dim=2 interpretation: [0] [gen] = [2], [2 0] [1 0] [f](x0, x1) = [0 1]x0 + [0 0]x1, [3 0] [0] [g](x0) = [0 0]x0 + [2], [2 0] [3 0] [h](x0, x1) = [0 0]x0 + [0 1]x1, [0] [0] = [0], [0] [b] = [0], [1] [a] = [0], [2 0] [s](x0) = [0 1]x0 orientation: [3 0] [0] [2 0] [0] g(x) = [0 0]x + [2] >= [0 0]x + [2] = h(x,gen()) [3 0] [3 0] h(0(),x) = [0 1]x >= [0 1]x = f(x,x) [1] [0] a() = [0] >= [0] = b() [0] [0] gen() = [2] >= [2] = s(gen()) problem: strict: g(x) -> h(x,gen()) h(0(),x) -> f(x,x) weak: gen() -> s(gen()) Matrix Interpretation Processor: dim=4 interpretation: [0] [0] [gen] = [0] [0], [1 0 1 0] [1 0 1 0] [0] [0 0 0 0] [0 0 0 0] [0] [f](x0, x1) = [1 0 0 0]x0 + [1 0 0 0]x1 + [3] [1 2 0 0] [1 0 0 1] [0], [1 1 1 0] [2] [0 0 0 0] [0] [g](x0) = [2 0 0 2]x0 + [1] [0 0 0 0] [2], [1 0 0 0] [3 1 2 0] [0] [0 0 0 0] [0 0 0 0] [0] [h](x0, x1) = [0 0 0 2]x0 + [2 0 0 0]x1 + [1] [0 0 0 0] [3 2 0 1] [1], [0] [0] [0] = [0] [1], [2 0 0 0] [0 0 0 0] [s](x0) = [0 0 0 0]x0 [0 0 0 0] orientation: [1 1 1 0] [2] [1 0 0 0] [0] [0 0 0 0] [0] [0 0 0 0] [0] g(x) = [2 0 0 2]x + [1] >= [0 0 0 2]x + [1] = h(x,gen()) [0 0 0 0] [2] [0 0 0 0] [1] [3 1 2 0] [0] [2 0 2 0] [0] [0 0 0 0] [0] [0 0 0 0] [0] h(0(),x) = [2 0 0 0]x + [3] >= [2 0 0 0]x + [3] = f(x,x) [3 2 0 1] [1] [2 2 0 1] [0] [0] [0] [0] [0] gen() = [0] >= [0] = s(gen()) [0] [0] problem: strict: h(0(),x) -> f(x,x) weak: gen() -> s(gen()) Matrix Interpretation Processor: dim=2 interpretation: [2] [gen] = [1], [1 0] [1 0] [f](x0, x1) = [0 0]x0 + [2 0]x1, [1 0] [3 1] [h](x0, x1) = [2 0]x0 + [2 0]x1, [1] [0] = [0], [1 0] [0] [s](x0) = [0 0]x0 + [1] orientation: [3 1] [1] [2 0] h(0(),x) = [2 0]x + [2] >= [2 0]x = f(x,x) [2] [2] gen() = [1] >= [1] = s(gen()) problem: strict: weak: gen() -> s(gen()) Qed