Studia Logica

, Volume 69, Issue 3, pp 411-427

First online:

Priorean Strict Implication, Q and Related Systems

  • Fabrice CorreiaAffiliated withUniversity of Geneva

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We introduce a system PSI for a strict implication operator called Priorean strict implication. The semantics for PSI is based on partial Kripke models without accessibility relations. PSI is proved sound and complete with respect to that semantics, and Prior's system Q and related systems are shown to be fragments of PSI or of a mild extension of it.

strict implication system Q partial Kripke models