Invited Talks.- Nonmonotonic Description Logics - Requirements, Theory, and Implementations.- Our Quest for the Holy Grail of Agent Verification.- An Abstract Framework for Satisfiability Modulo Theories.- Research Papers.- Axiom Pinpointing in General Tableaux.- Proof Theory for First Order ?ukasiewicz Logic.- A Tableau Method for Public Announcement Logics.- Bounded Model Checking with Description Logic Reasoning.- Tableau Systems for Logics of Subinterval Structures over Dense Orderings.- A Cut-Free Sequent Calculus for Bi-intuitionistic Logic.- Tableaux with Dynamic Filtration for Layered Modal Logics.- The Neighbourhood of S0.9 and S1.- EXPTIME Tableaux with Global Caching for Description Logics with Transitive Roles, Inverse Roles and Role Hierarchies.- Tree-Sequent Methods for Subintuitionistic Predicate Logics.- A Sequent Calculus for Bilattice-Based Logic and Its Many-Sorted Representation.- Updating Reduced Implicate Tries.- A Bottom-Up Approach to Clausal Tableaux.- Differential Dynamic Logic for Verifying Parametric Hybrid Systems.- System Descriptions.- Improvements to the Tableau Prover PITP.- KLMLean 2.0: A Theorem Prover for KLM Logics of Nonmonotonic Reasoning.
