4.15/2.15 YES 4.15/2.15 4.15/2.15 Proof: 4.15/2.15 This system is confluent. 4.15/2.15 By \cite{SMI95}, Corollary 4.7 or 5.3. 4.15/2.15 This system is oriented. 4.15/2.15 This system is of type 3 or smaller. 4.15/2.15 This system is right-stable. 4.15/2.15 This system is properly oriented. 4.15/2.15 This is an overlay system. 4.15/2.15 This system is left-linear. 4.15/2.15 All 2 critical pairs are trivial or infeasible. 4.15/2.15 Overlap: (rule1: tc(x') -> y' <= pin(x') = pout(z), tc(z) = y', rule2: tc(y) -> y, pos: ε, mgu: {(x',y)}) 4.15/2.15 CP: y = y' <= pin(y) = pout(z), tc(z) = y' 4.15/2.15 This critical pair is infeasible. 4.15/2.15 This critical pair is conditional. 4.15/2.15 This critical pair has some non-trivial conditions. 4.15/2.15 '\Sigma(pin(y)) \cap (->^*_R)[\Sigma(REN(pout(z)))]' is empty by ETAC. 4.15/2.15 Overlap: (rule1: tc(y) -> y, rule2: tc(x') -> y' <= pin(x') = pout(z), tc(z) = y', pos: ε, mgu: {(y,x')}) 4.15/2.15 CP: y' = x' <= pin(x') = pout(z), tc(z) = y' 4.15/2.15 This critical pair is infeasible. 4.15/2.15 This critical pair is conditional. 4.15/2.15 This critical pair has some non-trivial conditions. 4.15/2.15 '\Sigma(pin(x')) \cap (->^*_R)[\Sigma(REN(pout(z)))]' is empty by ETAC. 4.15/2.15 5.84/2.33 EOF