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Showing papers on "Indexed language published in 2021"

Journal Article•DOI•
On finite-index indexed grammars and their restrictions

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Flavio D'Alessandro1, Flavio D'Alessandro2, Oscar H. Ibarra3, Ian McQuillan4•
Boğaziçi University1, Sapienza University of Rome2, University of California, Santa Barbara3, University of Saskatchewan4
01 Aug 2021-Information & Computation
TL;DR: This work looks at larger families of (restricted) indexed languages and study their combinatorial and decidability properties, and their relationships.
Abstract: The family, L ( IND LIN ) , of languages generated by linear indexed grammars has been studied in the literature. It is known that the Parikh image of every language in L ( IND LIN ) is semi-linear. However, there are bounded semi-linear languages that are not in L ( IND LIN ) . Here, we look at larger families of (restricted) indexed languages and study their combinatorial and decidability properties, and their relationships.

3 citations