Philosophy Lexicon of Arguments

Logic: logic is the doctrine of the admissibility or inadmissibility of relations between statements and thus the validity of the compositions of these statements. In particular, the question is whether conclusions can be obtained from certain presuppositions such as premises or antecedents. Logical formulas are not interpreted at first. Only the interpretation, i. e. the insertion of values, e.g. objects instead of the free variables, makes the question of their truth meaningful.
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I 259
Free logic/Simons: rejects conditionals of the form "N (Fa> (Ex) Fx)" - ((s) no linking of existence generalization and necessity.) - Free logic: above: singular terms refer to 1 or 0 items - WigginsVsFree logic - Free logic: instead of existence generalization weaker scheme: (Ex)(x = a) , Fa I- (Ex)Fx.

Si I
P. Simons
Parts Oxford New York 1987

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