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» Some Results on Directable Automata
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SOFSEM
2010
Springer
14 years 5 months ago
Picture Recognizability with Automata Based on Wang Tiles
We introduce a model of automaton for picture language recognition which is based on tiles and is called Wang automaton, since its description relies on the notation of Wang system...
Violetta Lonati, Matteo Pradella
LPAR
2007
Springer
14 years 2 months ago
The Complexity of Temporal Logic with Until and Since over Ordinals
Abstract. We consider the temporal logic with since and until modalities. This temporal logic is expressively equivalent over the class of ordinals to first-order logic thanks to ...
Stéphane Demri, Alexander Rabinovich
ENTCS
2008
100views more  ENTCS 2008»
13 years 8 months ago
A Calculus for Team Automata
Team automata are a formalism for the component-based specification of reactive, distributed systems. Their main feature is a flexible technique for specifying coordination patter...
Maurice H. ter Beek, Fabio Gadducci, Dirk Janssens
DLT
2009
13 years 6 months ago
On Stateless Multihead Finite Automata and Multihead Pushdown Automata
A stateless k-head two-way deterministic finite automaton (k-head 2DFA), has only one state, hence the designation stateless. Its transitions depends solely on the symbols currentl...
Pierluigi Frisco, Oscar H. Ibarra
IPL
2007
94views more  IPL 2007»
13 years 8 months ago
A note on emptiness for alternating finite automata with a one-letter alphabet
We present a new proof of PSPACE-hardness of the emptiness problem for alternating finite automata with a singleton alphabet. This result was shown by Holzer (1995) who used a pr...
Petr Jancar, Zdenek Sawa