Abstract
Cauchy unital tree valuation monoids are introduced as weight structures for weighted tree automata. Rational tree series over this kind of monoids are defined and Kleene’s classical theorem is proved for this setting: a tree series over a Cauchy unital tree valuation monoid is recognizable if and only if it is rational.
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Droste, M., Fülöp, Z., & Götze, D. (2016). A Kleene theorem for weighted tree automata over tree valuation monoids. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 9618, pp. 452–463). Springer Verlag. https://doi.org/10.1007/978-3-319-30000-9_35
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