0.00/0.52	YES
0.00/0.52	
0.00/0.52	Problem:
0.00/0.53	add(x, 0()) -> x
0.00/0.53	add(x, s(y)) -> s(add(x, y))
0.00/0.53	quad(x) -> z <= add(x, x) = y, add(y, y) = z
0.00/0.53	
0.00/0.53	Proof:
0.00/0.53	This system is confluent.
0.00/0.53	By \cite{SMI95}, Corollary 4.7 or 5.3.
0.00/0.53	This system is oriented.
0.00/0.53	This system is of type 3 or smaller.
0.00/0.53	This system is right-stable.
0.00/0.53	This system is properly oriented.
0.00/0.53	This is an overlay system.
0.00/0.53	This system is left-linear.
0.00/0.53	All 0 critical pairs are trivial or infeasible.
0.00/0.53	
0.00/0.53	EOF