Blurred Conditionals

  • Angelika Kratzer
Part of the Synthese Language Library book series (SLAP, volume 13)


What is the meaning of ifthen clauses? More than 2000 year ago, Philo argued for what we now call material implication. And Chrysippos fought for what we now call strict implication. In modern times, G. Frege argued for material implication again. And so did C. I. Lewis for strict implication. Philo and Chrysippos, Frege and Lewis defended their ideas, found followers and died.


Actual World Deontic Logic Causal Dependence Indicative Conditional Inference Pattern 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    Adams, E. A.: 1975, The Logic of Conditionals, Dordrecht, Reidel.Google Scholar
  2. [2]
    Boole, G.: An Investigation of the Laws of Thought, New York, Dover Publications, reprint of the 1854 edition.Google Scholar
  3. [3]
    Burgess, J.: 1979, Quick Completeness Proofs for some Logics of Conditionals, Manuscript, Princeton University.Google Scholar
  4. [4]
    van Fraassen, B.: 1972, ‘The logic of conditional obligation’, Journal of Philosophical Logic 1, 417–438.Google Scholar
  5. [5]
    Frege, G.: 1966, Logische Untersuchungen, G. Patzig (ed.), Göttingen, Vandenhoeck and Rupprecht.Google Scholar
  6. [6]
    Goodman, N.: 1947, ‘The problem of counterfactual conditionals’, The Journal of Philosophy 44.Google Scholar
  7. [7]
    Grice, H. P.: The William James Lectures, unpublished.Google Scholar
  8. Hansson, B .: 1969, ‘An analysis of some deontic logics’,Nous 3Google Scholar
  9. [9]
    Jackson, F.: 1979, ‘On assertion and indicative conditionals’, The Philosophical Review 88.Google Scholar
  10. [10]
    Kratzer, A.: 1981, ‘The notional category of modality’, in H. J. Eikmeyer and H. Rieser (eds.): Words, Worlds and Contexts. New Approaches in Word Semantics, Berlin-New York, de Gruyter.Google Scholar
  11. [11]
    Lewis, D.: 1973, Counterfactuals, Oxford, Blackwell.Google Scholar
  12. [12]
    Lewis, D.: 1976, ‘Probabilities of conditionals and conditional probability’, The Philosophical Review 85.Google Scholar
  13. [13]
    Wallis, J.: 1699, Opera Quaedam Miscellanea, Oxford. Reprinted in Wallis, J., Opera Mathematica, Vol. III, Hildesheim and New York, Olms, 1972.Google Scholar

Copyright information

© D. Reidel Publishing Company 1981

Authors and Affiliations

  • Angelika Kratzer

There are no affiliations available

Personalised recommendations