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Open AccessJournal ArticleDOI

Linear automaton transformations

Anil Nerode
- Vol. 9, Iss: 4, pp 541-544
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TLDR
For a finite commutative ring with unit the authors determine which linear transformations M: RN—+RN can be realized by finite automata.
Abstract
Let R be a nonempty set, let N consist of all non-negative rational integers, and denote by RN the set of all functions on N to R. If R is a ring, a map M: R"—>P^ is linear if M(rxfx+r2f2)=rx(Mfx) +r2(Mf2) for rx, r2 in R, fx, f2 in RN. For a finite commutative ring with unit we determine which linear transformations M: RN—+RN can be realized by finite automata. More precisely, let A, B he finite nonempty sets. A map M: AN—>BN is an automaton transformation if there exists a finite set Q, maps Mq: A X£>—><2, Mb: A XQ-*B, elements h in B, q in Q such that corresponding to each/ in AN there exists an h in QN satisfying

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Journal ArticleDOI

Subpath Queries on Compressed Graphs: A Survey

Nicola Prezza
- 05 Jan 2021 - 
TL;DR: For a survey of the main landmarks of the fascinating journey that took us from suffix trees to today's compressed indexes for labeled graphs and regular languages, see, e.g., as mentioned in this paper.
Journal ArticleDOI

Growth rates of permutation classes: Categorization up to the uncountability threshold

TL;DR: In this paper, it was shown that ξ is the least accumulation point from above of growth rates and that all growth rates less than or equal to ξ are achieved by finitely based classes.
Posted Content

MSOL-definability equals recognizability for Halin graphs and bounded degree $k$-outerplanar graphs

TL;DR: For graphs of bounded treewidth, it was shown in this paper that every graph property that can be defined by a sentence in counting monadic second order logic (CMSOL) can be checked in linear time.
Journal ArticleDOI

Time-varying linear sequential machines. I

TL;DR: A time-varying linear sequential machine model is considered which hasthe property that the dimensionality of the system is a function of time and it is shown that every TVLSM has a minimal form unique up to isomorphism.
Journal ArticleDOI

Coalgebraic Quantum Computation

TL;DR: In this paper, a coalgebraic representation of systems occuring in the field of quantum computation, using convex sets of density matrices as state spaces, is presented, which can be used to convert quantum mechanical systems into simpler probabilistic systems with the same behaviour.
References
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Book ChapterDOI

Representation of Events in Nerve Nets and Finite Automata

S. C. Kleene
TL;DR: This memorandum is devoted to an elementary exposition of the problems and of results obtained on the McCulloch-Pitts nerve net during investigations in August 1951.