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The logic FP(Ł,Ł) and two-sorted equational states
Proceedings of the Thirteenth International Symposium on Imprecise Probability: Theories and Applications, PMLR 215:280-287, 2023.
Abstract
The logic {FP(Ł{},Ł)} was introduced by L. Godo and T. Flaminio as an expansion of {Ł}ukasiewicz logic with a modality, to reason about the probability of vague events. We prove that {FP(Ł{},Ł)} is complete with respect to a class of two-sorted algebras, called equational states. They are an equational presentation of the well-known theory of states over lattice ordered groups.