The equivalence of finite valued transducers (on HDT0L languages) is decidable
Theoretical Computer Science
On the valuedness of finite transducers
Acta Informatica
Decomposing finite-valued transducers and deciding their equivalence
SIAM Journal on Computing
A construction on finite automata that has remained hidden
Theoretical Computer Science - Special issue: papers dedicated to the memory of Marcel-Paul Schützenberger
The unsolvability of the Equivalence Problem for Λ-Free nondeterministic generalized machines
Journal of the ACM (JACM)
Automata, Languages, and Machines
Automata, Languages, and Machines
Computers and Intractability: A Guide to the Theory of NP-Completeness
Computers and Intractability: A Guide to the Theory of NP-Completeness
Squaring transducers: an efficient procedure for deciding functionality and sequentiality
Theoretical Computer Science
Sur les relations rationnelles
Proceedings of the 2nd GI Conference on Automata Theory and Formal Languages
On the Decidability of Bounded Valuedness for Transducers
MFCS '08 Proceedings of the 33rd international symposium on Mathematical Foundations of Computer Science
Elements of Automata Theory
Multitape one-way nonwriting automata
Journal of Computer and System Sciences
Nondeterministic streaming string transducers
ICALP'11 Proceedings of the 38th international conference on Automata, languages and programming - Volume Part II
Hi-index | 0.00 |
We give a new proof for the decidability of the equivalence of two k-valued transducers, a result originally established by Culik and Karhümaki and independently by Weber. Our proof relies on two constructions we have recently introduced to decompose a k-valued transducer and to decide whether a transducer is k-valued. As a result, our proof is entirely based on the structure of the transducers under inspection, and the complexity it yields is of single exponential order on the number of states. This improves Weber's result by one exponential.