0.00/0.54	YES
0.00/0.54	
0.00/0.54	Problem:
0.00/0.54	f(x) -> a() <= x = b()
0.00/0.54	
0.00/0.54	Proof:
0.00/0.54	This system is confluent.
0.00/0.54	By \cite{SMI95}, Corollary 4.7 or 5.3.
0.00/0.54	This system is oriented.
0.00/0.54	This system is of type 3 or smaller.
0.00/0.54	This system is right-stable.
0.00/0.54	This system is properly oriented.
0.00/0.54	This is an overlay system.
0.00/0.54	This system is left-linear.
0.00/0.54	All 0 critical pairs are trivial or infeasible.
0.00/0.54	
0.00/0.82	EOF