By presenting state-of-the-art research results on various aspects of formal and visual modeling of software and systems, this book commemorates the 60th birthday of Hartmut Ehrig.

Graph Transformation.- On the Concurrent Semantics of Algebraic Graph Grammars.- From Graph Transformation to Software Engineering and Back.- Flexible Interconnection of Graph Transformation Modules.- Simulating Algebraic High-Level Nets by Parallel Attributed Graph Transformation.- Graph Processes with Fusions: Concurrency by Colimits, Again.- Graph Transformation with Variables.- Graph Transformation in Molecular Biology.- Changing Labels in the Double-Pushout Approach Can Be Treated Categorically.- Algebraic Specification and Logic.- Modules, Brains and Schemas.- From Conditional Specifications to Interaction Charts.- Algebraic Properties of Interfaces.- ? T -Integration of Logics.- Functorial Semantics of Rewrite Theories.- Expander2.- Relationships Between Equational and Inductive Data Types.- Cofree Coalgebras for Signature Morphisms.- Formal and Visual Modeling.- Nested Constraints and Application Conditions for High-Level Structures.- Synthesis Revisited: Generating Statechart Models from Scenario-Based Requirements.- Main Concepts of Networks of Transformation Units with Interlinking Semantics.- Embeddings and Contexts for Link Graphs.- Towards Architectural Connectors for UML.- Loose Semantics of Petri Nets.- A Formal Framework for the Development of Concurrent Object-Based Systems.- A Formal Description of the Basic Concepts of System Theory for Transportation.