IJAC
2000
13 years 11 months ago
2000
For W a finite set of words, we consider the Rees quotient of a free monoid with respect to the ideal consisting of all words that are not subwords of W. This monoid is denoted by...
CSL
2000
Springer
14 years 3 months ago
2000
Springer
We study definability of languages in arithmetic and the free monoid by bounded versions of fixed-point and transitive-closure logics. In particular we give logical characterisat...
LATIN
2010
Springer
14 years 6 months ago
2010
Springer
We prove that the radix cross-section of a rational set for a length morphism, and more generally for a rational function from a free monoid into N, is rational, a property that d...