Developments in Language Theory [electronic resource] : 9th International Conference, DLT 2005, Palermo, Italy, July 4-8, 2005. Proceedings / edited by Clelia Felice, Antonio Restivo.

Restricted Towers of Hanoi and Morphisms -- Collapsing Words: A Progress Report -- Locally Consistent Parsing and Applications to Approximate String Comparisons -- Central Sturmian Words: Recent Developments -- Reversible Cellular Automata -- Inexpressibility Results for Regular Languages in Nonregular Settings -- Complexity of Quantum Uniform and Nonuniform Automata -- Membership and Finiteness Problems for Rational Sets of Regular Languages -- Tissue P Systems with Antiport Rules and Small Numbers of Symbols and Cells -- The Mortality Threshold for Partially Monotonic Automata -- Sturmian Words: Dynamical Systems and Derivated Words -- Schützenberger and Eilenberg Theorems for Words on Linear Orderings -- On the Membership of Invertible Diagonal Matrices -- A Kleene Theorem for Languages of Words Indexed by Linear Orderings -- Revolving-Input Finite Automata -- Some New Results on Palindromic Factors of Billiard Words -- A Note on a Result of Daurat and Nivat -- Palindromes in Sturmian Words -- Voronoi Cells of Beta-Integers -- Languages with Mismatches and an Application to Approximate Indexing -- Bidimensional Sturmian Sequences and Substitutions -- Unambiguous Morphic Images of Strings -- Complementing Two-Way Finite Automata -- On Timed Automata with Discrete Time – Structural and Language Theoretical Characterization -- Monotone Deterministic RL-Automata Don’t Need Auxiliary Symbols -- On Hairpin-Free Words and Languages -- Adding Monotonic Counters to Automata and Transition Graphs -- Polynomial Generators of Recursively Enumerable Languages -- On Language Inequalities XK???LX -- The Power of Tree Series Transducers of Type I and II -- The Inclusion Problem for Unambiguous Rational Trace Languages -- LR Parsing for Boolean Grammars -- On Some Properties of the Language of 2-Collapsing Words -- Semi-rational Sets of DAGs -- On the Frequency of Letters in Pure Binary Morphic Sequences.