Coalgebras for Binary Methods
Hendrik Tews · Electronic Notes in Theoretical Computer Science · 2000
Coalgebras for endofunctors C → C can be used to model classes of object oriented languages. However, binary methods do not fit directly into this approach. This paper proposes an extension of the coalgebraic framework, namely the use of extended polynomial functors C op π C → C . This extension allows the incorporation of binary methods into coalgebraic class specifications. The paper also discusses how to define bisimulation for coalgebras of extended polynomial functors and proves some standard results.