We study (collapsible) higher-order pushdown systems -- theoretically robust and well-studied models of higher-order programs -- along with their natural subclass called (collapsi...
It is an open problem whether weak bisimilarity is decidable for Basic Process Algebra (BPA) and Basic Parallel Processes (BPP). A PSPACE lower bound for BPA and NP lower bound fo...
A context-freegrammar(CFG)in GreibachNormalForm coincides,in anothernotation,witha system of guarded recursion equations in Basic Process Algebra. Hence to each CFG a process can b...
Jos C. M. Baeten, Jan A. Bergstra, Jan Willem Klop
Abstract. Milner proposed an axiomatization for the Kleene star in basic process algebra, in the presence of deadlock and empty process, modulo bisimulation equivalence. In this pa...
This paper shows that bisimulation equivalence does not afford a finite equational axiomatization over the language obtained by enriching Bergstra and Klop’s Basic Process Alge...