Journal Article

<i>Modus Tollens</i> Probabilized

Carl G. Wagner

in The British Journal for the Philosophy of Science

Published on behalf of British Society for the Philosophy of Science

Volume 55, issue 4, pages 747-753
Published in print December 2004 | ISSN: 0007-0882
Published online December 2004 | e-ISSN: 1464-3537 | DOI:
Modus Tollens Probabilized

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We establish a probabilized version of modus tollens, deriving from p(E|H)=a and p(Ē)=b the best possible bounds on p(H̄). In particular, we show that p(H̄) → 1 as a, b → 1, and also as a, b → 0.


Probabilities of conditionals

Conditional probabilities

3.1 Adams' thesis

3.2 Modus ponens for conditional probabilities

3.3 Modus tollens for conditional probabilities

Journal Article.  0 words. 

Subjects: Philosophy of Science ; Science and Mathematics

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