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Charles G. Morgan,Local and global operators and many-valued modal logics,Notre Dame Journal of Formal Logic, to appear.
Peter K. Schotch, Jorgen B. Jensen, Peter F. Larsen, andEdwin J. Mac Lellan,A nole on three-valued modal logic,Notre Dame Journal of Formal Logic, to appear.
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This work was supported in part by the National Research Council of Canada.
Allatum est die 29 Decembris 1976
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Thomason, S.K. Possible worlds and many truth values. Stud Logica 37, 195–204 (1978). https://doi.org/10.1007/BF02124804
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DOI: https://doi.org/10.1007/BF02124804