Formal Tools for Modular System Development

摘要

The dualities event-condition and local state-global state in basic net theory are exploited in order to equip system designers with formal tools supporting modular system development. In the framework of categories with suitable morphisms of Elementary Net systems, Elementary Transition systems and Orthomodular posets of system local states (regions), some operations of composition and refinement are discussed as tools for modularity and abstraction.