Invited Presentations -- Interactive Mathematical Documents -- Algebra and Geometry -- An Inductive Inference System and Its Rationality -- Semantic Guidance for Saturation Provers -- Contributed Papers -- Labeled @-Calculus: Formalism for Time-Concerned Human Factors -- Enhanced Theorem Reuse by Partial Theory Inclusions -- Extension of First-Order Theories into Trees -- The Confluence Problem for Flat TRSs -- Some Properties of Triangular Sets and Improvement Upon Algorithm CharSer -- A New Definition for Passivity and Its Relation to Coherence -- A Full System of Invariants for Third-Order Linear Partial Differential Operators -- An Algorithm for Computing the Complete Root Classification of a Parametric Polynomial -- Quantifier Elimination for Quartics -- On the Mixed Cayley-Sylvester Resultant Matrix -- Implicitization of Rational Curves -- Operator Calculus Approach to Solving Analytic Systems -- Solving Dynamic Geometric Constraints Involving Inequalities -- Constraints for Continuous Reachability in the Verification of Hybrid Systems -- Using Hajós’ Construction to Generate Hard Graph 3-Colorability Instances -- Finding Relations Among Linear Constraints -- A Search Engine for Mathematical Formulae -- Hierarchical Representations with Signatures for Large Expression Management.