 
					
					
						Reduction Order					
				 
				
					
						 المؤلف:  
						Baader, F. and Nipkow, T
						 المؤلف:  
						Baader, F. and Nipkow, T					
					
						 المصدر:  
						Term Rewriting and All That. Cambridge, England: Cambridge University Press, 1999.
						 المصدر:  
						Term Rewriting and All That. Cambridge, England: Cambridge University Press, 1999.					
					
						 الجزء والصفحة:  
						...
						 الجزء والصفحة:  
						...					
					
					
						 8-2-2022
						8-2-2022
					
					
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						876					
				 
				
				
				
				
				
				
				
				
				
			 
			
			
				
				Reduction Order
A strict order  on the set of terms of a term rewriting system is called a reduction order if
 on the set of terms of a term rewriting system is called a reduction order if
1. The set of terms is well ordered with respect to  , that is, all its nonempty subsets contain their least elements,
, that is, all its nonempty subsets contain their least elements,
2. This order is compatible with functions (operations) of the system, i.e.,
and
3. For any substitution  (cf. unification),
 (cf. unification),  .
.
If  holds for every rewriting rule
 holds for every rewriting rule  , then this term rewriting system is finitely terminating.
, then this term rewriting system is finitely terminating.
REFERENCES
Baader, F. and Nipkow, T. Term Rewriting and All That. Cambridge, England: Cambridge University Press, 1999.
Wolfram, S. A New Kind of Science. Champaign, IL: Wolfram Media, p. 1037, 2002.
				
				
					
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