Modal Semirings Revisited

  • Authors:
  • Jules Desharnais;Georg Struth

  • Affiliations:
  • Département d'informatique et de génie logiciel, Pavillon Adrien-Pouliot, Québec, Canada G1V 0A6;Department of Computer Science, University of Sheffield, United Kingdom S1 4DP

  • Venue:
  • MPC '08 Proceedings of the 9th international conference on Mathematics of Program Construction
  • Year:
  • 2008

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Abstract

A new axiomatisation for domain and codomain on semirings and Kleene algebras is proposed. It is simpler, more general and more flexible than a predecessor, and it is particularly suitable for program analysis and construction via automated deduction. Different algebras of domain elements for distributive lattices, (co-)Heyting algebras and Boolean algebras arise by adapting this axiomatisation. Modal operators over all these domain algebras can then easily be defined. The calculus of the previous axiomatisation arises as a special case. An application in terms of a fully automated proof of a modal correspondence result for Löb's formula is also presented.