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DLT
2006
13 years 6 months ago
Synchronization of Pushdown Automata
Abstract. We introduce the synchronization of a pushdown automaton by a sequential transducer associating an integer to each input word. The visibly pushdown automata are the autom...
Didier Caucal
DLT
2006
13 years 6 months ago
Hierarchies of Tree Series Transformations Revisited
Abstract. Tree series transformations computed by polynomial topdown and bottom-up tree series transducers are considered. The hierarchy of tree series transformations obtained in ...
Andreas Maletti
DLT
2006
13 years 6 months ago
The Growth Ratio of Synchronous Rational Relations Is Unique
We introduce -synchronous relations for a rational number . We show that if a rational relation is both - and -synchronous for two different numbers and , then it is recognizab...
Olivier Carton