Results 11 to 20 of about 471,067 (339)

Karp-Miller Trees for a Branching Extension of VASS [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
We study BVASS (Branching VASS) which extend VASS (Vector Addition Systems with States) by allowing addition transitions that merge two configurations. Runs in BVASS are tree-like structures instead of linear ones as for VASS.
Kumar Neeraj Verma   +1 more
doaj   +2 more sources

E-unification by means of tree tuple synchronized grammars [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 1997
The goal of this paper is both to give an E-unification procedure that always terminates, and to decide unifiability. For this, we assume that the equational theory is specified by a confluent and constructor-based rewrite system, and that four ...
Sébastien Limet, Pierre Réty
doaj   +1 more source

Kähler moduli stabilization and the propagation of decidability [PDF]

open access: yesPhysical Review D, 2019
Diophantine equations are in general undecidable, yet appear readily in string theory. We demonstrate that numerous classes of Diophantine equations arising in string theory are decidable and propose that decidability may propagate through networks of ...
James Halverson   +3 more
semanticscholar   +1 more source

A new proof for the decidability of D0L ultimate periodicity [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2011
We give a new proof for the decidability of the D0L ultimate periodicity problem based on the decidability of p-periodicity of morphic words adapted to the approach of Harju and Linna.
Vesa Halava, Tero Harju, Tomi Kärki
doaj   +1 more source

Decidability, complexity, and expressiveness of first-order logic over the subword ordering [PDF]

open access: yesLogic in Computer Science, 2017
We consider first-order logic over the subword ordering on finite words where each word is available as a constant. Our first result is that the Σ1 theory is undecidable (already over two letters).
Simon Halfon   +2 more
semanticscholar   +1 more source

Decision Problems for Deterministic Pushdown Automata on Infinite Words [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2014
The article surveys some decidability results for DPDAs on infinite words (omega-DPDA). We summarize some recent results on the decidability of the regularity and the equivalence problem for the class of weak omega-DPDAs.
Christof Löding
doaj   +1 more source

On the decidability of reachability in linear time-invariant systems [PDF]

open access: yesInternational Conference on Hybrid Systems: Computation and Control, 2018
We consider the decidability of state-to-state reachability in linear time-invariant control systems over discrete time. We analyse this problem with respect to the allowable control sets, which in general are assumed to be defined by boolean ...
Nathanaël Fijalkow   +4 more
semanticscholar   +1 more source

Improved Undecidability Results for Reachability Games on Recursive Timed Automata [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2014
We study reachability games on recursive timed automata (RTA) that generalize Alur-Dill timed automata with recursive procedure invocation mechanism similar to recursive state machines. It is known that deciding the winner in reachability games on RTA is
Shankara Narayanan Krishna   +2 more
doaj   +1 more source

Robustly Complete Finite-State Abstractions for Control Synthesis of Stochastic Systems

open access: yesIEEE Open Journal of Control Systems, 2023
The essential step of abstraction-based control synthesis for nonlinear systems to satisfy a given specification is to obtain a finite-state abstraction of the original systems.
Yiming Meng, Jun Liu
doaj   +1 more source

Who Decides Who Decides? [PDF]

open access: yesThe Hastings Center Report, 1977
Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/90544/1/3561853 ...
openaire   +3 more sources

Home - About - Disclaimer - Privacy