Term Rewriting System R: [x, y] f(g(h(x, y)), f(a, a)) -> f(h(x, x), g(f(y, a))) Termination of R to be shown. Removing the following rules from R which fullfill a polynomial ordering: f(g(h(x, y)), f(a, a)) -> f(h(x, x), g(f(y, a))) where the Polynomial interpretation: POL(g(x_1)) = 1 + 2*x_1 POL(a) = 0 POL(h(x_1, x_2)) = x_1 + x_2 POL(f(x_1, x_2)) = 2*x_1 + x_2 was used. All Rules of R can be deleted. Termination of R successfully shown. Duration: 0.387 seconds.