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Robert Schwartzkopff
Universität Hamburg
  1.  66
    Numbers as ontologically dependent objects hume’s principle revisited.Robert Schwartzkopff - 2011 - Grazer Philosophische Studien 82 (1):353-373.
    Adherents of Ockham’s fundamental razor contend that considerations of ontological parsimony pertain primarily to fundamental objects. Derivative objects, on the other hand, are thought to be quite unobjectionable. One way to understand the fundamental vs. derivative distinction is in terms of the Aristotelian distinction between ontologically independent and dependent objects. In this paper I will defend the thesis that every natural number greater than 0 is an ontologically dependent object thereby exempting the natural numbers from Ockham’s fundamental razor.
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    Singular Terms Revisited.Robert Schwartzkopff - 2016 - Synthese 193 (3).
    Neo-Fregeans take their argument for arithmetical realism to depend on the availability of certain, so-called broadly syntactic tests for whether a given expression functions as a singular term. The broadly syntactic tests proposed in the neo-Fregean tradition are the so-called inferential test and the Aristotelian test. If these tests are to subserve the neo-Fregean argument, they must be at least adequate, in the sense of correctly classifying paradigm cases of singular terms and non-singular terms. In this paper, I pursue two (...)
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    Number sentences and specificational sentences: Reply to Moltmann.Robert Schwartzkopff - 2015 - Philosophical Studies 173 (8):2173-2192.
    Frege proposed that sentences like ‘The number of planets is eight’ be analysed as identity statements in which the number words refer to numbers. Recently, Friederike Moltmann argued that, pace Frege, such sentences be analysed as so-called specificational sentences in which the number words have the same non-referring semantic function as the number word ‘eight’ in ‘There are eight planets’. The aim of this paper is two-fold. First, I argue that Moltmann fails to show that such sentences should be analysed (...)
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    Nun sag, Frege, wie hast du’s mit der Existenz? [REVIEW]Robert Schwartzkopff - 2019 - Deutsche Zeitschrift für Philosophie 67 (6):1042-1048.
    This is a review of Dolf Rami's book "Existenz un Anzahl" on Frege's notion of existence.
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