STACS
2001
Springer
14 years 3 months ago
2001
Springer
We propose a new, logical, approach to the decidability problem for the Straubing and Brzozowski hierarchies based on the preservation theorems from model theory, on a theorem of ...
FCT
2001
Springer
14 years 3 months ago
2001
Springer
We show that some natural refinements of the Straubing and Brzozowski hierarchies correspond (via the so called leaf-languages) step by step to similar refinements of the polynom...