Bisimilarity is not Finitely Based over BPA with Interrupt

Luca Aceto, Willem Jan Fokkink, Anna Ingólfsdóttir, Sumit Nain


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 Algebra with the interrupt operator. Moreover, it is shown that the collection of closed equations over this language is also not finitely based. In sharp contrast to these results, the collection of closed equations over the language BPA enriched with the disrupt operator is proven to be finitely based.

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ISSN: 0909-0878 

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