About Universal Hybrid Networks of Evolutionary Processors of Small Size
A hybrid network of evolutionary processors (an HNEP) is a graph with a language processor, input and output filters associated to each node. A language processor performs one type of point mutations (insertion, deletion or substitution) on the words in that node. The filters are defined by certain variants of random-context conditions. In this paper, we present a universal complete HNEP with 10 nodes simulating circular Post machines and show that every recursively enumerable language can be generated by a complete HNEP with 10 nodes. Thus, we positively answer the question posed in  about the possibility to generate an arbitrary recursively enumerable language over an alphabet V with a complete HNEP of a size smaller than 27 + 3·card(V).
KeywordsBio-inspired computing Hybrid networks of evolutionary processors Small universal systems Descriptional complexity Circular Post machines
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