DECOMPOSITIONS OF SEMI-THUE-SYSTEMS

被引:2
作者
CLAUS, V
WALTER, H
机构
[1] Institut für Angewandte Mathematik der Universität des Saarlandes, Saarbrücken
关键词
D O I
10.1007/BF02234759
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
We consider five notions of decompositions of Semi-Thue-Systems. These are interesting in view of the theory of Semi-Thue-Systems as well as in regard to practical applications (simplification of the analysisproblem). The decompositions form a simple hierarchy. We proof a necessary and sufficient condition for each of the decompositions. Three of the notions are shown to be determinable in general, the other two notions are determinable only for contextfree Semi-Thue-Systems. © 1969 Springer-Verlag.
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页码:107 / &
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