1996
DOI: 10.1142/s0129054196000191
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Multi-Push-Down Languages and Grammars

Abstract: A new class of languages, called multi-push-down (mpd), that generalize the classical context-free (cf, or Chomsky type 2) ones is introduced. These languages preserve some important properties of cf languages: a generalization of the Chomsky-Schützenberger homomorphic characterization theorem, the Parikh theorem and a “pumping lemma” are proved. Multi-push-down languages are an AFL. Their recognizers are automata equipped with a multi-push-down tape. Multi-push-down languages form a hierarchy based on the num… Show more

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Cited by 84 publications
(75 citation statements)
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“…The proof makes use of the ideas from [3], where a proof for a normal form for D n -grammars (see below) is given. Notice, however, that we do not use the same normal form as the one of [3] for MPDA.…”
Section: -Only the Following Transitions Are Allowedmentioning
confidence: 99%
See 2 more Smart Citations
“…The proof makes use of the ideas from [3], where a proof for a normal form for D n -grammars (see below) is given. Notice, however, that we do not use the same normal form as the one of [3] for MPDA.…”
Section: -Only the Following Transitions Are Allowedmentioning
confidence: 99%
“…To retain desirable decidability properties of pushdown automata, such as emptiness, one needs to restrict the model accordingly. In [3], Breveglieri et al define multi-pushdown automata (MPDA), which impose a linear ordering on stacks. Stack operations are henceforth constrained in such a way that a pop operation is reserved to the first non-empty stack.…”
Section: Introductionmentioning
confidence: 99%
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“…Lemma 3.5 ( [BCCC96]). If M 1 and M 2 are two n-OMPAs over an alphabet Σ, then it is possible to construct an n-OMPA M over Σ such that:…”
Section: Ordered Multi-pushdown Automatamentioning
confidence: 99%
“…In [BCCC96], Breveglieri et al define ordered multi-pushdown automata (OMPA), which impose a linear ordering on stacks. Stack transitions are constrained in such a way that a pop transition is reserved to the first non-empty stack.…”
Section: Introductionmentioning
confidence: 99%