Philosophy Lexicon of Arguments

Author Item Excerpt Meta data

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I 38
Logical Consequence / Cresswell: crucial difference to the entailment: it combines forms of sentence or sentence schemes ((s) no content, not sentences). It is not a question of which propositions are involved and what are the truth values of the individual sentences - Entailment: if all the worlds where p and q are true, are exactly those, where p is true, then that means in this particular case, that p entails p u q. - That q follows from p intensionally - punch line: but p u q is not a logical consequence of p, because there are ways to ascribe truth values to p and q that make p true, but p u q wrong.

Cr I
M. J. Cresswell
Semantical Essays (Possible worlds and their rivals) Dordrecht Boston 1988

M. J. Cresswell
Structured Meanings Cambridge Mass. 1984

> Counter arguments against Cresswell

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Ed. Martin Schulz, access date 2017-05-24