Periodic D0L languages (Q1093376)
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scientific article; zbMATH DE number 4022656
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Periodic D0L languages |
scientific article; zbMATH DE number 4022656 |
Statements
Periodic D0L languages (English)
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1986
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The following problem in combinatorial semigroup theory and in formal language theory is proved to be decidable. Given a morphism \(h:A^*\to A^*\) and a word \(w\in A^*\) over the alphabet A, is the sequence w, h(w), \(h^ 2(w)\),... eventually periodic, that is, does there exist integers i, p and \(e>0\) such that \(h^{i+p}(w)=(h^ i(w))^ e\)?
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free semigroups
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D0L-systems
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periodicity of words
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formal language
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