Decomposition and factorization of chemical reaction transducers

Fumiya Okubo, Takashi Yokomori

    Research output: Contribution to journalArticle


    Chemical reaction automata, computing models inspired by chemical reactions occurring in nature, have been proposed and investigated in [28]. In this paper, we introduce the notion of a chemical reaction transducer (CRT) which is defined as a chemical reaction automaton equipped with output device. We investigate the problem of decomposing CRTs into simpler component CRTs in two different forms: serial decomposition and factorization. For the serial decomposition, we give a sufficient condition for CRTs to be serially decomposable. For factorization, we show that each CRT T can be realized in the form: T(x)=g(h−1(x)∩L) for some codings g,h and a chemical reaction language L, which provides a generalization of notable Nivat's Theorem for rational transducers. This result is then elaborated in a refined form. Further, some transformational characterizations of CRTs are also discussed.

    Original languageEnglish
    JournalTheoretical Computer Science
    Publication statusAccepted/In press - 2019 Jan 1



    • Chemical reaction automata
    • Chemical reaction transducers
    • Decomposition theorem
    • Multiset-based computing

    ASJC Scopus subject areas

    • Theoretical Computer Science
    • Computer Science(all)

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