Philosophy Lexicon of Arguments

Derivation: how to deduce statements from other statements within a calculus.
Author Item Excerpt Meta data

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I 158
Derivability/Derivative/Mates: "Fa" can not be derived from "(Ex) Fx" as "Fa" is no implication - but you can introduce "Fa" as a premise.

Mate I
B. Mates
Elementare Logik Göttingen 1969

Mate II
B. Mates
0226509869 1981

> Counter arguments against Mates

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Ed. Martin Schulz, access date 2017-05-30