Recognisable Languages over Monads.- Garside and quadratic normalisation: a survey.- Grammar-Based Tree Compression.- On decidability of intermediate levels of concatenation hierarchies.- Ergodic in Finite permutations of minimal complexity.- Diverse Palindromic Factorization is NP-Complete.- Factorization in Formal Languages.- Consensus Game Acceptors.- On the Size of Two-Way Reasonable Automata for the Liveness Problem.- Squareable Words.- Complexity Analysis: Transformation Monoids of Finite Automata.- Palindromic complexity of trees.- Deciding proper conjugacy of classes of one-sided Finite-type-Dyck shifts.- Transfinite Lyndon words.- Unary patterns under permutations.- Finite Automata Over In Finite Alphabets: Two Models with Transitions for Local Change.- Enumeration formulin neutral sets.- On the Density of Context-Free and Counter Languages.- Star-Continuous Kleene Omega-Algebras.- Unary probabilistic and quantum automata on promise problems.- Generalizations of Code Languages with Marginal Errors.- Minimal Reversible Deterministic Finite Automata.- Multi-Sequential Word Relations.- The Boundary of Prefix-Free Languages.- A connected 3-state reversible Mealy automaton cannot generate an infinite Burnside group.- Path Checking for MTL and TPTL over Data Words.- On Distinguishing NC1 and NL.- Sur minimisation of automata.- On the Complexity of k-Piecewise Testability and the Depth of Automata.- Interval Exchange Words and the Question of Hof, Knill, and Simon.- State Complexity of Neighbourhoods and Approximate Pattern Matching.- Deterministic ordered restarting automata that compute functions.- Weight Assignment Logic.- Complexity Bounds of Constant-Space Quantum Computation.