18 found
Sort by:
See also:
Profile: Fred (Frederick) Johnson (Colorado State University)
  1. Fred Johnson (2004). Aristotle's Modal Syllogisms. In Dov M. Gabbay, John Woods & Akihiro Kanamori (eds.), Handbook of the History of Logic. Elsevier. 1--247.
    No categories
    Direct download  
     
    My bibliography  
     
    Export citation  
  2. Fred Johnson (1999). Parry Syllogisms. Notre Dame Journal of Formal Logic 40 (3):414-419.
    Parry discusses an extension of Aristotle's syllogistic that uses four nontraditional quantifiers. We show that his conjectured decision procedure for validity for the extended syllogistic is correct even if syllogisms have more than two premises. And we axiomatize this extension of the syllogistic.
    Direct download (5 more)  
     
    My bibliography  
     
    Export citation  
  3. Fred Johnson (1999). Rejection and Truth-Value Gaps. Notre Dame Journal of Formal Logic 40 (4):574-577.
    A theorem due to Shoesmith and Smiley that axiomatizes two-valued multiple-conclusion logics is extended to partial logics.
    Direct download (5 more)  
     
    My bibliography  
     
    Export citation  
  4. Fred Johnson (1997). Extended Gergonne Syllogisms. Journal of Philosophical Logic 26 (5):553-567.
    Syllogisms with or without negative terms are studied by using Gergonne's ideas. Soundness, completeness, and decidability results are given.
    Direct download (8 more)  
     
    My bibliography  
     
    Export citation  
  5. Fred Johnson (1995). Apodeictic Syllogisms: Deductions and Decision Procedures. History and Philosophy of Logic 16 (1):1-18.
  6. Fred Johnson (1994). Syllogisms with Fractional Quantifiers. Journal of Philosophical Logic 23 (4):401 - 422.
    Aristotle's syllogistic is extended to include denumerably many quantifiers such as 'more than 2/3' and 'exactly 2/3.' Syntactic and semantic decision procedures determine the validity, or invalidity, of syllogisms with any finite number of premises. One of the syntactic procedures uses a natural deduction account of deducibility, which is sound and complete. The semantics for the system is non-classical since sentences may be assigned a value other than true or false. Results about symmetric systems are given. And reasons are given (...)
    Direct download (6 more)  
     
    My bibliography  
     
    Export citation  
  7. Fred Johnson (1994). Zachary Seech, Open Minds and Everyday Reasoning Reviewed By. Philosophy in Review 14 (3):211-212.
    No categories
    Direct download  
     
    My bibliography  
     
    Export citation  
  8. Fred Johnson (1993). Modal Ecthesis. History and Philosophy of Logic 14 (2):171-182.
    Direct download (3 more)  
     
    My bibliography  
     
    Export citation  
  9. Fred Johnson (1992). Counting Functions. Notre Dame Journal of Formal Logic 33 (4):567-568.
    Direct download (4 more)  
     
    My bibliography  
     
    Export citation  
  10. Fred Johnson (1991). Three-Membered Domains for Aristotle's Syllogistic. Studia Logica 50 (2):181 - 187.
    The paper shows that for any invalid polysyllogism there is a procedure for constructing a model with a domain with exactly three members and an interpretation that assigns non-empty, non-universal subsets of the domain to terms such that the model invalidates the polysyllogism.
    Direct download (5 more)  
     
    My bibliography  
     
    Export citation  
  11. Fred Johnson (1989). Models for Modal Syllogisms. Notre Dame Journal of Formal Logic 30 (2):271-284.
    Direct download (4 more)  
     
    My bibliography  
     
    Export citation  
  12. Fred Johnson (1989). Analogical Arguings and Explainings. Informal Logic 11 (3).
    Direct download (13 more)  
     
    My bibliography  
     
    Export citation  
  13. Fred Johnson (1984). Arguings and Arguments. Informal Logic 6 (2).
    Direct download (13 more)  
     
    My bibliography  
     
    Export citation  
  14. Fred Johnson (1984). Trees for a 3-Valued Logic. Analysis 44 (1):43-6.
    Direct download (5 more)  
     
    My bibliography  
     
    Export citation  
  15. Fred Johnson (1980). An Introduction to Reasoning. Teaching Philosophy 3 (3):373-375.
    Direct download (4 more)  
     
    My bibliography  
     
    Export citation  
  16. Fred Johnson (1980). Deductively-Inductively. Informal Logic 3 (1):4-5.
    No categories
    Direct download  
     
    My bibliography  
     
    Export citation  
  17. Frederick A. Johnson (1979). Copi's Method of Deduction. Notre Dame Journal of Formal Logic 20 (2):295-300.
    Direct download (4 more)  
     
    My bibliography  
     
    Export citation  
  18. Frederick Ernest Johnson (ed.) (1960). Patterns of Ethics in America Today. New York, Distributed by Harper.
    Ethics of Judaism, by M.J. Routtenberg.--Ethics of Roman Catholicism, by J.P. Fitzpatrick.--Ethics of Protestantism, by A.T. Mollegen.--The ethical culture movement, by J. Nathanson.--Rational ethics, by L. Bryson.--Ethical frontiers, by W.G. Muelder.
     
    My bibliography  
     
    Export citation