Abstract
The minimal weakening \({{\textsf {N}}}_0\) of Belnap-Dunn logic under the polarity semantics for negation as a modal operator is formulated as a sequent system which is characterized by the class of all birelational frames. Some extensions of \({{\textsf {N}}}_0\) with additional sequents as axioms are introduced. In particular, all three modal negation logics characterized by a frame with a single state are formalized as extensions of \({{\textsf {N}}}_0\). These logics have the finite model property and they are decidable.
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We give our thanks to the referees of the manuscript of this paper for their helpful comments. The authors were supported by Chinese National Foundation of Social Sciences (Grant No. 18ZDA033).
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Lin, Y., Ma, M. Polarity Semantics for Negation as a Modal Operator. Stud Logica 108, 877–902 (2020). https://doi.org/10.1007/s11225-019-09879-w
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DOI: https://doi.org/10.1007/s11225-019-09879-w