YES We show the termination of the TRS R: quot(|0|(),s(y),s(z)) -> |0|() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,|0|(),s(z)) -> s(quot(x,s(z),s(z))) -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: quot#(s(x),s(y),z) -> quot#(x,y,z) p2: quot#(x,|0|(),s(z)) -> quot#(x,s(z),s(z)) and R consists of: r1: quot(|0|(),s(y),s(z)) -> |0|() r2: quot(s(x),s(y),z) -> quot(x,y,z) r3: quot(x,|0|(),s(z)) -> s(quot(x,s(z),s(z))) The estimated dependency graph contains the following SCCs: {p1, p2} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: quot#(s(x),s(y),z) -> quot#(x,y,z) p2: quot#(x,|0|(),s(z)) -> quot#(x,s(z),s(z)) and R consists of: r1: quot(|0|(),s(y),s(z)) -> |0|() r2: quot(s(x),s(y),z) -> quot(x,y,z) r3: quot(x,|0|(),s(z)) -> s(quot(x,s(z),s(z))) The set of usable rules consists of (no rules) Take the reduction pair: lexicographic combination of reduction pairs: 1. lexicographic path order with precedence: precedence: s > quot# > |0| argument filter: pi(quot#) = [1, 3] pi(s) = 1 pi(|0|) = [] 2. lexicographic path order with precedence: precedence: s > |0| > quot# argument filter: pi(quot#) = [1, 3] pi(s) = [1] pi(|0|) = [] The next rules are strictly ordered: p1 We remove them from the problem. -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: quot#(x,|0|(),s(z)) -> quot#(x,s(z),s(z)) and R consists of: r1: quot(|0|(),s(y),s(z)) -> |0|() r2: quot(s(x),s(y),z) -> quot(x,y,z) r3: quot(x,|0|(),s(z)) -> s(quot(x,s(z),s(z))) The estimated dependency graph contains the following SCCs: (no SCCs)