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DLT
2006
13 years 10 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 10 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 10 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