Technical Report CS0394

TR#:CS0394
Class:CS
Title: Decidability Questions for Finite Probabilistic Propositional Dynamic Logic
Authors: M.L. Tiornkin and J.A. Makowsky
PDFCS0394.pdf
Abstract: This paper deals with various versions of finite propositional-probabilistic dynamic logic. Besides the logics previously introduced in the literature [Fe, Ko79, Ko83] we present some natural variations and extensions of these logics. We also present another kind of probabilistic propositional dynamic logic with simple probabilistic estimations and "almost regular" program language. We investigate the (un)decidability of these logics and present a complete picture of decidability and undecidability. Some of these logics have the finite model property, and therefore, if they are undecidable. they are exactly Pi01. We show that allowing nesting and probabilistic choice leads to undecidability.
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