Philosophy Lexicon of Arguments

Author Item Excerpt Meta data
Geach, Peter T.
Books on Amazon
Contradictions I 70/71
Contradictions/Sentence/Geach: Contradictions of sentences can only be achieved through the negation of predicates, never by the negation of a name
I 71
Contradiction: no sentence can have two (non-equivalent) contradictions - contrary: one sentence may have several contradictory sentences (assertions) - contradiction only through negation of predicate, never of subject - contradictions: ditto

Gea I
P.T. Geach
Logic Matters Oxford 1972

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Ed. Martin Schulz, access date 2017-04-25