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THE EXISTENTIAL QUANTIFIER AND THE PROBLEM OF THE PREDICATION OF EXISTENCE IN BOLZANO

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Vlasakova M.

Organon F. medzinárodný časopis pre analytickú filozofiu

2005

vol. 12

issue 2

168-175

Instead of the existential quantifier Bernard Bolzano uses his notion of 'Gegenständlichkeit einer Vorstellung an sich' (objectivity of a representation in itself). This approach makes it possible for him to solve the traditional problem of the predication of existence (i.e. whether it is possible to consider existence as a standard property of individuals) in accordance with an approach common today, namely to take existence to be primarily a property ('occupation') of a corresponding representation in itself, and not a characteristic of individuals. However, Bolzano considers a property of real existence to be attributable also to particular individuals, which is essentially different from the usual practice.

WHAT DO THE EXISTENTIAL QUANTIFIER AND EXISTENCE HAVE IN COMMON?

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Vlasakova M.

Organon F. medzinárodný časopis pre analytickú filozofiu

2007

vol. 14

issue 2

177-186

Recent extensional logic considers a formula containing existential quantifier as an adequate way of rewriting a statement about the existence of something. Quine even claims that 'to be is to be the value of a variable'. That means that if we consider a theory to be true, we have to treat all members of an appropriate universe as existing. This article intends to point out a difficulty in this conception: The primary task of an existential quantifier is only to claim that something can be found in a universe, whatever the universe is.

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2 Organon F. medzinárodný časopis pre analytickú filozofiu

2 Vlasakova M.

1 2007

1 2005

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THE EXISTENTIAL QUANTIFIER AND THE PROBLEM OF THE PREDICATION OF EXISTENCE IN BOLZANO

WHAT DO THE EXISTENTIAL QUANTIFIER AND EXISTENCE HAVE IN COMMON?