Invited Talks -- The Omega Number: Irreducible Complexity in Pure Math -- Roles of Math Search in Mathematics -- Contributed Papers -- Structured Induction Proofs in Isabelle/Isar -- Interpretation of Locales in Isabelle: Theories and Proof Contexts -- A Dynamic Poincaré Principle -- A Proof-Theoretic Approach to Tactics -- A Formal Correspondence Between OMDoc with Alternative Proofs and the -Calculus -- Proof Transformation by CERES -- Synthesizing Proof Planning Methods and ?-Ants Agents from Mathematical Knowledge -- Verifying and Invalidating Textbook Proofs Using Scunak -- Capturing Abstract Matrices from Paper -- Towards a Parser for Mathematical Formula Recognition -- Stochastic Modelling of Scientific Terms Distribution in Publications -- Capturing the Content of Physics: Systems, Observables, and Experiments -- Communities of Practice in MKM: An Extensional Model -- From Notation to Semantics: There and Back Again -- Managing Informal Mathematical Knowledge: Techniques from Informal Logic -- From Untyped to Polymorphically Typed Objects in Mathematical Web Services -- Managing Automatically Formed Mathematical Theories -- Authoring LeActiveMath Calculus Content -- Information Retrieval and Rendering with MML Query -- Integrating Dynamic Geometry Software, Deduction Systems, and Theorem Repositories.