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Tableaus for many-valued modal logic. (English) Zbl 0837.03017
Summary: We continue a series of papers on a family of many-valued modal logics, a family whose Kripke semantics involves many-valued accessibility relations. Earlier papers in the series presented a motivation in terms of a multiple-expert semantics. They also proved completeness of sequent calculus formulations for the logics, formulations using a cut rule in an essential way. In this paper a novel cut-free tableau formulation is presented, and its completeness is proved.

##### MSC:
 03B45 Modal logic (including the logic of norms) 03B50 Many-valued logic 03F05 Cut-elimination and normal-form theorems
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##### References:
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