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Modern Dermatologic Radiation Therapyicit in the following. In explicit approaches besides replacement rules governing which graph is to be replaced by which one, connection rules are introduced which define the connections between the inserted graphs. In implicit systems, graph replacement rules have a third component, called connecti

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Introduction to the algebraic theory of graph grammars (a survey),mmars up to now. The complete material is illustrated by several examples, especially by applications to a "very small data base system", where consistent states are represented as graphs, operation rules and operations as productions and derivations in a graph grammar respectively. Further applicat

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Partially-additive monoids, graph-growing, and the algebraic semantics of recursive calls,setting for the semantics of nondeterministic programs] has led us to axiomatize the notion of a .. We show that programs incorporating procedure calls may be represented by graph grammars, with one non-terminal and production for each distinct procedure (including the program itself). Program execu

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Programmed graph grammars,lowing hierarchy is known from [5]:.[enum] = [exp-unrestricted] ? [exp-monotone] = [exp-context free].The proof of section 3 holds true also for unrestricted productions, so.[enum] = [exp-unrestricted] ? [pr-unrestricted]..At the other hand, from Def. 2.11 it follows immediately that.[pr-unrestricte