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Algebraic Recognition of Regular Functions

Abstract

We consider regular string-to-string functions, i.e. functions that are recognized by copyless streaming string transducers, or any of their equivalent models, such as deterministic two-way automata. We give yet another characterization, which is very succinct: finiteness-preserving functors from the category of semigroups to itself, together with a certain output function that is a natural transformation.
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Dates and versions

hal-03985883 , version 1 (13-02-2023)

Licence

Attribution - CC BY 4.0

Identifiers

  • HAL Id : hal-03985883 , version 1

Cite

Mikołaj Bojańczyk, Lê Thành Dũng Nguyễn. Algebraic Recognition of Regular Functions. 2023. ⟨hal-03985883⟩
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