Abstract
We present a probabilistic justification logic, \(\mathsf {PPJ} \), to study rational belief, degrees of belief and justifications. We establish soundness and completeness for \(\mathsf {PPJ} \) and show that its satisfiability problem is decidable. In the last part we use \(\mathsf {PPJ} \) to provide a solution to the lottery paradox.
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Notes
- 1.
In order to have a countable language and in order to obtain decidability we restrict our probabilistic operators to the rational numbers.
- 2.
We agree to the convention that the formula \({!^{n-1}} c : {!^{n-2}} c : \cdots : {!c} : c : A\) represents the formula A for \(n=0\).
- 3.
We will usually write \(*_w\) instead of \(*(w)\).
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Acknowledgements
We would like to thank the anonymous referees for many valuable comments that helped us improve the paper substantially.
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Kokkinis, I., Ognjanović, Z., Studer, T. (2016). Probabilistic Justification Logic. In: Artemov, S., Nerode, A. (eds) Logical Foundations of Computer Science. LFCS 2016. Lecture Notes in Computer Science(), vol 9537. Springer, Cham. https://doi.org/10.1007/978-3-319-27683-0_13
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