16 found
Sort by:
  1. Brian F. Chellas & Krister Segerberg (1996). Modal Logics in the Vicinity of S. Notre Dame Journal of Formal Logic 37 (1):1-24.
    We define prenormal modal logics and show that S1, S1, S0.9, and S0.9 are Lewis versions of certain prenormal logics, determination and decidability for which are immediate. At the end we characterize Cresswell logics and ponder C. I. Lewis's idea of strict implication in S1.
    Direct download (3 more)  
     
    My bibliography  
     
    Export citation  
  2. Brian F. Chellas (1995). On Bringing It About. Journal of Philosophical Logic 24 (6):563 - 571.
    Direct download (6 more)  
     
    My bibliography  
     
    Export citation  
  3. Brian F. Chellas & Krister Segerberg (1994). Modal Logics with the MacIntosh Rule. Journal of Philosophical Logic 23 (1):67 - 86.
    Having gained some idea of what MacIntosh logics there are, we conclude this paper with a remark about the totality of them. Let theterritory of a rule or condition be the class of all modal logics that have the rule or satisfy the condition. What is MacIntosh territory, the class of all normal logics with the MacIntosh rule, like? What is its structure?
    Direct download (5 more)  
     
    My bibliography  
     
    Export citation  
  4. Brian F. Chellas (1992). Time and Modality in the Logic of Agency. Studia Logica 51 (3-4):485 - 517.
    Recent theories of agency (sees to it that) of Nuel Belnap and Michael Perloff are examined, particularly in the context of an early proposal of the author.
    Direct download (5 more)  
     
    My bibliography  
     
    Export citation  
  5. Brian F. Chellas (1986). Review: Krister Segerberg, The Logic of Deliberate Action. [REVIEW] Journal of Symbolic Logic 51 (2):476-477.
    Direct download (2 more)  
     
    My bibliography  
     
    Export citation  
  6. Brian F. Chellas (1980). Another Proof for the Decidability of Four Modal Logics. Philosophia 9 (2):251-264.
    Direct download (6 more)  
     
    My bibliography  
     
    Export citation  
  7. Brian F. Chellas (1980). Modal Logic: An Introduction. Cambridge University Press.
    A textbook on modal logic, intended for readers already acquainted with the elements of formal logic, containing nearly 500 exercises. Brian F. Chellas provides a systematic introduction to the principal ideas and results in contemporary treatments of modality, including theorems on completeness and decidability. Illustrative chapters focus on deontic logic and conditionality. Modality is a rapidly expanding branch of logic, and familiarity with the subject is now regarded as a necessary part of every philosopher's technical equipment. Chellas here offers an (...)
    Direct download  
     
    My bibliography  
     
    Export citation  
  8. Brian F. Chellas (1980). Review: Nicholas J. Moutafakis, Imperatives and Their Logics. [REVIEW] Journal of Symbolic Logic 45 (2):375-376.
    Direct download (2 more)  
     
    My bibliography  
     
    Export citation  
  9. Brian F. Chellas (1975). Basic Conditional Logic. Journal of Philosophical Logic 4 (2):133 - 153.
    Direct download (5 more)  
     
    My bibliography  
     
    Export citation  
  10. Brian F. Chellas (1975). Quantity and Quantification. Synthese 31 (3-4):487 - 491.
    No categories
    Direct download (5 more)  
     
    My bibliography  
     
    Export citation  
  11. Brian F. Chellas & Audrey McKinney (1975). The Completeness of Monotonic Modal Logics. Mathematical Logic Quarterly 21 (1):379-383.
    No categories
    Direct download (3 more)  
     
    My bibliography  
     
    Export citation  
  12. Brian F. Chellas (1974). Review: David P. Gauthier, Hare's Debtors. [REVIEW] Journal of Symbolic Logic 39 (2):366-366.
    Direct download (2 more)  
     
    My bibliography  
     
    Export citation  
  13. Brian F. Chellas (1974). Review: R. M. Hare, Freedom and Reason. [REVIEW] Journal of Symbolic Logic 39 (2):365-366.
    Direct download  
     
    My bibliography  
     
    Export citation  
  14. Brian F. Chellas (1972). Notions of Relevance. Journal of Philosophical Logic 1 (3/4):287 - 293.
    In his paper Leblanc seeks to supplant traditional forms of semantic theory with truth-value analyses. I have tried, here, to extend the scope, if not the limits, of his results. But now, in closing, I wish to register some reservations about his notion of relevance.Leblanc eschews the customary semantic analysis of intensional languages — the so-called ‘possible worlds’ semantics — as making ‘metaphysical virtue out of logical necessity’. And so he would replace such accounts with ‘truth-value’ analyses. But, alas, these (...)
    Direct download (5 more)  
     
    My bibliography  
     
    Export citation  
  15. Brian F. Chellas (1971). Imperatives. Theoria 37 (2):114-129.
    No categories
    Direct download (3 more)  
     
    My bibliography  
     
    Export citation  
  16. Brian F. Chellas (1971). Review: R. M. Hare, The Language of Morals. [REVIEW] Journal of Symbolic Logic 36 (1):180-181.
    Direct download (2 more)  
     
    My bibliography  
     
    Export citation