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arXiv · 2607.19906

The Dynamic Turn in Paraconsistency

Rafael Ongaratto·Hans van Ditmarsch
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Abstract

In this work we propose a dynamic turn in paraconsistency. We introduce AMLFI1, the action model extension of the paraconsistent logic LFI1. A special case is PALFI1, a paraconsistent logic of public announcements. It corresponds to another, recently published, paraconsistent public announcement logic: the differences in their axiomatizations are mutually admissible. We also introduce UMLFI1, that extends AMLFI1 with factual change. Soundness and completeness are proven for all logics, and all extend the epistemic paraconsistent logics KLFI1, KB4LFI1 and S5LFI1, known from the literature. With such dynamic epistemic paraconsistent logics we can formalize obtaining and resolving provisional contradictions.

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Rafael Ongaratto, Hans van Ditmarsch. 2026-07-22. The Dynamic Turn in Paraconsistency. https://arxiv.org/abs/2607.19906

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