Abstract
The equational properties of the least fixed point operation on (ω-)continuous functions on (ω-)complete partially ordered sets are captured by the axioms of iteration algebras, or iteration theories. We show that the equational laws of the binary supremum operation in conjunction with the least fixed point operation on (ω-)continuous functions on (ω -)complete semilattices have a finite axiomatization over the equations of iteration algebras. As a byproduct of this relative axiomatizability result, we obtain complete infinite equational, and finite implicational axiomatizations.
Partially supported by grant no. FKFP 247/1999 from the Ministry of Education of Hungary and grant no. T30511 from the National Foundation of Hungary for Scientific Research.
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Ésik, Z. (2000). Axiomatizing the Least Fixed Point Operation and Binary Supremum. In: Clote, P.G., Schwichtenberg, H. (eds) Computer Science Logic. CSL 2000. Lecture Notes in Computer Science, vol 1862. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44622-2_20
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DOI: https://doi.org/10.1007/3-540-44622-2_20
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