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DM
2010
88views more  DM 2010»
13 years 10 months ago
Multidimensional generalized automatic sequences and shape-symmetric morphic words
An infinite word is S-automatic if, for all n 0, its (n+1)st letter is the output of a deterministic automaton fed with the representation of n in the numeration system S. In this...
Emilie Charlier, Tomi Kärki, Michel Rigo
ENTCS
2010
90views more  ENTCS 2010»
13 years 10 months ago
Recursive Program Schemes and Context-Free Monads
Solutions of recursive program schemes over a given signature were characterized by Bruno Courcelle as precisely the context-free (or algebraic) -trees. These are the finite and ...
Jirí Adámek, Stefan Milius, Jiri Vel...
FAC
2008
64views more  FAC 2008»
13 years 10 months ago
Testing a deterministic implementation against a non-controllable non-deterministic stream X-machine
A stream X-machine is a type of extended finite state machine with an associated development approach that consists of building a system from a set of trusted components. One of th...
Robert M. Hierons, Florentin Ipate
FMSD
2008
64views more  FMSD 2008»
13 years 10 months ago
Robust safety of timed automata
Timed automata are governed by an idealized semantics that assumes a perfectly precise behavior of the clocks. The traditional semantics is not robust because the slightest perturb...
Martin De Wulf, Laurent Doyen, Nicolas Markey, Jea...
COMBINATORICS
2006
112views more  COMBINATORICS 2006»
13 years 10 months ago
Shift-Induced Dynamical Systems on Partitions and Compositions
The rules of "Bulgarian solitaire" are considered as an operation on the set of partitions to induce a finite dynamical system. We focus on partitions with no preimage u...
Brian Hopkins, Michael A. Jones