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Open AccessJournal ArticleDOI

Practical decomposition of automata

Akihiro Nozaki
- 01 Mar 1978 - 
- Vol. 36, Iss: 3, pp 275-291
TLDR
A series-parallel decomposition of an automaton A into r components is said to be practical if every component has fewer states than the original automaton C iff the product of the numbers of states of components is equal to the number ofStates of A.
Abstract
A series-parallel decomposition of an automaton A into r components ( r ⩾ 1) is said to be practical if every component has fewer states than the original automaton A . It is said to be perfect iff the product of the numbers of states of components is equal to the number of states of A . Necessary and sufficient conditions are given for a Moore-type automaton to have a practical decomposition. An algebraic criterion is also given for a reduced, strongly connected permutation automaton to have a perfect decomposition. It should be noted that an automaton may have a perfect decomposition although its semigroup is a simple group, and that an automaton may not have a practical decomposition, while its semigroup is a nonsimple group.

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Book ChapterDOI

The Algebraic Theory of Automata

M. Dal Cin
TL;DR: The aim of this chapter is to introduce the reader to the theory of discrete information processing systems (automata) and to develop an algebraic framework within which to talk about their complexity.
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Cascade Product of Permutation Groups

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Automated semantics-preserving parallel decomposition of finite component and connector architectures

TL;DR: A concept of influence between channels of components is presented that supports automated semantics-preserving parallel decomposition of finite deterministic component implementations into independent, more comprehensible components that are better accessible for analysis and development.
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Decomposition and factorization of chemical reaction transducers

TL;DR: For factorization, it is shown 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 Nivat's Theorem for rational transducers.
Proceedings ArticleDOI

Data flow algorithms for processors with vector extensions: Handling actors with internal state

TL;DR: This paper proposes a methodology for using the parallel scan (also known as prefix sum) pattern to create algorithms for multiple simultaneous invocations of such an actor that results in vectorizable code.
References
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Book

The theory of groups

Marshall Hall
TL;DR: The theory of normal subgroups and homomorphisms was introduced in this article, along with the theory of $p$-groups regular $p-groups and their relation to abelian groups.
Journal ArticleDOI

Theories of Abstract Automata

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