YES Time: 0.052 Problem: Equations: minAC(minAC(x3,x4),x5) -> minAC(x3,minAC(x4,x5)) minAC(x3,x4) -> minAC(x4,x3) maxAC(maxAC(x3,x4),x5) -> maxAC(x3,maxAC(x4,x5)) maxAC(x3,x4) -> maxAC(x4,x3) minAC(x3,minAC(x4,x5)) -> minAC(minAC(x3,x4),x5) minAC(x4,x3) -> minAC(x3,x4) maxAC(x3,maxAC(x4,x5)) -> maxAC(maxAC(x3,x4),x5) maxAC(x4,x3) -> maxAC(x3,x4) TRS: plus(x,0()) -> x plus(x,s(y)) -> s(plus(x,y)) minAC(0(),y) -> 0() minAC(s(x),s(y)) -> s(minAC(x,y)) maxAC(0(),y) -> y maxAC(s(x),s(y)) -> s(maxAC(x,y)) Proof: AC-KBO Processor: precedence: plus > s ~ 0 ~ maxAC ~ minAC weight function: [s](x0) = x0 + 10, [plus](x0, x1) = x0 + x1 + 4, [0] = 2, [maxAC](x0, x1) = x0 + x1 + 8, [minAC](x0, x1) = x0 + x1 + 12 problem: Equations: minAC(minAC(x3,x4),x5) -> minAC(x3,minAC(x4,x5)) minAC(x3,x4) -> minAC(x4,x3) maxAC(maxAC(x3,x4),x5) -> maxAC(x3,maxAC(x4,x5)) maxAC(x3,x4) -> maxAC(x4,x3) minAC(x3,minAC(x4,x5)) -> minAC(minAC(x3,x4),x5) minAC(x4,x3) -> minAC(x3,x4) maxAC(x3,maxAC(x4,x5)) -> maxAC(maxAC(x3,x4),x5) maxAC(x4,x3) -> maxAC(x3,x4) TRS: Qed