The Syllogistic with Unity

نویسنده

  • Ian Pratt-Hartmann
چکیده

We extend the language of the classical syllogisms with the sentenceforms “At most 1 p is a q” and “More than 1 p is a q”. We show that the resulting logic does not admit a finite set of syllogism-like rules whose associated derivation relation is sound and complete, even when reductio ad absurdum is allowed.

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عنوان ژورنال:
  • J. Philosophical Logic

دوره 42  شماره 

صفحات  -

تاریخ انتشار 2013