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  • He was later to refer to his own tense operators as quasi-modal operators (1968: 138).

    The Sun Is Not

  • Between them Prior and von Wright pioneered the now much investigated field of general intensional logic, in which the syntax, and latterly the semantics, developed for the study of the alethic modalities is used in the analysis of a wide range of quasi-modal concepts.

    The Sun Is Not


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