Entailment Multipliers: An Algebraic Characterization of Validity for Classical and Modal Logics -- A CTL-Based Logic for Program Abstractions -- Application of Logic to Integer Sequences: A Survey -- The Two-Variable Fragment with Counting Revisited -- Intuitionistic Logic and Computability Theory -- Foundations of Satisfiability Modulo Theories -- Logical Form as a Determinant of Cognitive Processes -- Formal Lifetime Reliability Analysis Using Continuous Random Variables -- Modal Logics with Counting -- Verification of the Completeness of Unification Algorithms à la Robinson -- Mechanisation of PDA and Grammar Equivalence for Context-Free Languages -- On the Role of the Complementation Rule for Data Dependencies over Incomplete Relations -- Decidability and Undecidability Results on the Modal ?-Calculus with a Natural Number-Valued Semantics -- Solving the Implication Problem for XML Functional Dependencies with Properties -- On Anaphora and the Binding Principles in Categorial Grammar -- Feasible Functions over Co-inductive Data -- Interval Valued Fuzzy Coimplication -- Reduction of the Intruder Deduction Problem into Equational Elementary Deduction for Electronic Purse Protocols with Blind Signatures -- Intersection Type Systems and Explicit Substitutions Calculi -- Generalising Conservativity.

This book is edited in collaboration with FoLLI, the Association of Logic, Language and Information. It constitutes the proceedings of the 17th International Workshop on Logic, Language, Information and Computation, WoLLIC 2010, held in Brasilia, Brazil, in July 2010. The book presents 7 invited talks together with 13 papers which were carefully reviewed and selected from 32 submissions. The papers cover some of the most active areas of research on the frontiers between computation, logic, and linguistics, with particular interest in cross-disciplinary topics. Typical areas of interest are: foundations of computing and programming; novel computation models and paradigms; broad notions of proof and belief; formal methods in software and hardware development; logical approach to natural language and reasoning; logics of programs, actions and resources; foundational aspects of information organization, search, flow, sharing, and protection.