Decision Problems for Finite Automata over Infinite Algebraic Structures -- The Degree of Irreversibility in Deterministic Finite Automata -- Deterministic Stack Transducers -- Computing the Expected Edit Distance from a String to a PFA -- Derived-Term Automata of Multitape Rational Expressions -- Solving Parity Games Using an Automata-Based Algorithm -- Ternary Equational Languages -- Problems on Finite Automata and the Exponential Time Hypothesis -- A Practical Algorithm for the Uniform Membership Problem of Labeled Multidigraphs of Tree-Width 2 for Spanning Tree Automata -- A Practical Simulation Result for Two-Way Pushdown Automata -- Nondeterministic Complexity of Operations on Closed and Ideal Languages -- On Bounded Semilinear Languages, Counter Machines, and Finite-Index ET0L -- Kuratowski Algebras Generated by Prefix-Free Languages -- A Logical Characterization of Small 2NFAs -- Experiments with Synchronizing Automata -- Implementation of Code Properties via Transducers -- On Synchronizing Automata and Uniform Distribution -- Looking for the Pairs that are Hard to Separate: A Quantum Approach -- Prefix Distance Between Regular Languages -- Complexity of Sets of Two-Dimensional Patterns -- The Complexity of Fixed-Height Patterned Tile Self-Assembly -- Derivative-Based Diagnosis of Regular Expression Ambiguity -- Regular Approximation of Weighted Linear Nondeleting Context-Free Tree Languages -- Derivatives for Enhanced Regular Expressions -- Weighted Restarting Automata as Language Acceptors -- Enhancing Practical TAG Parsing Efficiency by Capturing Redundancy -- Analyzing Matching Time Behavior of Backtracking Regular Expression Matchers by Using Ambiguity of NFA.