Improved limitedness theorems on finite automata with distance functions
Theoretical Computer Science - Special issue on theoretical computer science, algebra and combinatorics
Factorization forests of finite height
Theoretical Computer Science - Special issue on theoretical computer science, algebra and combinatorics
Limitedness theorem on finite automata with distance functions: an algebraic proof
Theoretical Computer Science
LICS '06 Proceedings of the 21st Annual IEEE Symposium on Logic in Computer Science
The Non-deterministic Mostowski Hierarchy and Distance-Parity Automata
ICALP '08 Proceedings of the 35th international colloquium on Automata, Languages and Programming, Part II
Sampled universality of timed automata
FOSSACS'07 Proceedings of the 10th international conference on Foundations of software science and computational structures
On sampled semantics of timed systems
FSTTCS '05 Proceedings of the 25th international conference on Foundations of Software Technology and Theoretical Computer Science
Factorisation forests for infinite words application to countable scattered linear orderings
FCT'07 Proceedings of the 16th international conference on Fundamentals of Computation Theory
The Theory of Stabilisation Monoids and Regular Cost Functions
ICALP '09 Proceedings of the 36th Internatilonal Collogquium on Automata, Languages and Programming: Part II
Regular temporal cost functions
ICALP'10 Proceedings of the 37th international colloquium conference on Automata, languages and programming: Part II
Some variants of the star height problem
MFCS'11 Proceedings of the 36th international conference on Mathematical foundations of computer science
Languages of profinite words and the limitedness problem
ICALP'12 Proceedings of the 39th international colloquium conference on Automata, Languages, and Programming - Volume Part II
Hi-index | 0.00 |
We introduce R-automata--- finite state machines which operate on a finite number of unbounded counters. The values of the counters can be incremented, reset to zero, or left unchanged along the transitions. R-automata can be, for example, used to model systems with resources (modeled by the counters) which are consumed in small parts but which can be replenished at once. We define the language accepted by an R-automaton relative to a natural number Das the set of words allowing a run along which no counter value exceeds D. As the main result, we show decidability of the universality problem, i.e., the problem whether there is a number Dsuch that the corresponding language is universal. We present a proof based on finite monoids and the factorization forest theorem. This theorem was applied for distance automata in [12]--- a special case of R-automata with one counter which is never reset. As a second technical contribution, we extend the decidability result to R-automata with Büchi acceptance conditions.