Higraphs, which are structures extending graphs by permitting a hierarchy of nodes, underlie a number of diagrammatic formalisms popular in computing. We provide an algebraic account of higraphs (and of a mild extension), with our main focus being on the mathematical structures underlying common operations, such as those required for understanding the semantics of higraphs and Statecharts, and for implementing sound software tools which support them.
|Title of host publication
|Computer Science Logic 15th International Workshop, CSL 2001 10th Annual Conference of the EACSL Paris, France, September 10–13, 2001, Proceedings
|Place of Publication
|Number of pages
|Published - 2001
|Lecture Notes in Computer Science