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A Robust Class of Context-Sensitive Languages

Torre, Salvatore La, Madhusudan, Parthasarathy and Parlato, Gennaro (2007) A Robust Class of Context-Sensitive Languages At LICS, Poland. 10 - 12 Jul 2007. , pp. 161-170.

Record type: Conference or Workshop Item (Paper)


We define a new class of languages defined by multi-stack automata that forms a robust subclass of context-sensitive languages, with decidable emptiness and closure under boolean operations. This class, called multi-stack visibly pushdown languages (MVPLs), is defined using multi-stack pushdown automata with two restrictions: (a) the pushdown automaton is visible, i.e. the input letter determines the operation on the stacks, and (b) any computation of the machine can be split into k stages, where in each stage, there is at most one stack that is popped. MVPLs are an extension of visibly pushdown languages that captures noncontext free behaviors, and has applications in analyzing abstractions of multithreaded recursive programs, signifi- cantly enlarging the search space that can be explored for them. We show that MVPLs are closed under boolean operations, and problems such as emptiness and inclusion are decidable. We characterize MVPLs using monadic second-order logic over appropriate structures, and exhibit a Parikh theorem for them.

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Published date: 2007
Additional Information: Event Dates: 10-12 July 2007
Venue - Dates: LICS, Poland, 2007-07-10 - 2007-07-12
Organisations: Electronic & Software Systems


Local EPrints ID: 272465
PURE UUID: 054474bf-be3a-4cc3-b016-d48e89bea477

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Date deposited: 13 Jun 2011 14:43
Last modified: 18 Jul 2017 06:24

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Author: Salvatore La Torre
Author: Parthasarathy Madhusudan
Author: Gennaro Parlato

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