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- Title
Bolzano's Argument for the Existence of Substances: a Formalization with Two Types of Predication.
- Authors
Świętorzecka, Kordula
- Abstract
The topic of our analysis is the argument for the existence of substances given by Bernard Bolzano in Athanasia (1827), where he essentially employs two ontological categories: substance and adherence. Bolzano considers the real and conditioned Inbegriff of all adherences, which are wirklich and nicht selbst bestehen. He claims that the formed collection is dependent on something external and non-adherential, which therefore is a substance. Bolzano's argumentation turns out to be structurally similar to his argument for the existence of God from Lehrbuch der Religionswissenschaft (1834), but in each of these reasonings, we find different plausible interpretations of the key concept 'Inbegriff'. The latter argumentation refers to the mereological totality of existentially conditioned objects. We propose the explication of the Bolzanian Inbegriff of all adherences using two types of predication: we consider its extension as composed of certain intensional counterparts of adherences. In our approach, we use a fragment of the theory of abstract objects formulated by E. Zalta (1983), describing two different relations between individuals and properties: extensional exemplification and intensional encoding. We put our reconstruction in a wider context of Bolzano's ontology, formulating the needed axioms with two primitive predicates of second order ... is an adherence, ... is conditioned by something real as well as the conditionally introduced first order predicate constant $\mathfrak {In}$ for Inbegriff of all adherential ideas. Finally, we sketch a model for our theory.
- Subjects
SUBSTANCE (Philosophy); PROOF of God; WHOLE &; parts (Philosophy); PREDICATE (Logic); BOLZANO, Bernard, 1781-1848
- Publication
Acta Analytica, 2017, Vol 32, Issue 4, p411
- ISSN
0353-5150
- Publication type
Article
- DOI
10.1007/s12136-017-0317-4