Philosophy Lexicon of Arguments

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Existential generalization, logic: if an object that can be named, has a certain property, then there is at least one object with this property. See also universal generalization, universal instantiation.
 
Author Item Excerpt Meta data
Tarski, Alfred
 
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Existential Generalization Berka I 469
Generalization/generalization/Tarski: ((s) here: not existential generalization?) lets free variables disappear.
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Berka I 480
Generalization/generalization/fulfillment/"at most distinguishing at i-th position"/Tarski: ((s) here not existential generalization) - Let x be a propositional function, assuming it is already known, which sequences fulfill the function x - by considering the content of the considered operation, we will only claim of the sequence f that it satisfies the LKx function if the sequence itself satisfies the x function and even then not stops to satisfy it if the k-th term varies in any way - e.g. the function L2l1,2 is only satisfied by such a sequence, which verifies the formula f1

Tarsk I
A. Tarski
Logic, Semantics, Metamathematics: Papers from 1923-38 Indianapolis 1983

Brk I
K. Berka/L. Kreiser
Logik Texte Berlin 1983


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Ed. Martin Schulz, access date 2017-03-24