Unboundedness and downward closures of higher-order pushdown automata

We show the diagonal problem for higher-order pushdown automata (HOPDA), and hence the simultaneous unboundedness problem, is decidable. From recent work by Zetzsche this means that we can construct the downward closure of the set of words accepted by a given HOPDA. This also means we can construct...

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Bibliographic Details
Main Authors: Hague, M, Kochems, J, Ong, C
Format: Conference item
Language:English
Published: Association for Computing Machinery 2016

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