Mind 115 (460):983-1006 (2006)

Authors
Matthias Schirn
Ludwig Maximilians Universität, München
Abstract
Although the notion of logical object plays a key role in Frege's foundational project, it has hardly been analyzed in depth so far. I argue that Marco Ruffino's attempt to fill this gap by establishing a close link between Frege's treatment of expressions of the form ‘the concept F’ and the privileged status Frege assigns to extensions of concepts as logical objects is bound to fail. I argue, in particular, that Frege's principal motive for introducing extensions into his logical theory is not to be able to make in-direct statements about concepts, but rather to define all numbers as logical objects of a fundamental kind in order to ensure that we have the right cognitive access to them qua logical objects via Axiom V. Contrary to what Ruffino claims, reducibility to extensions cannot be the ‘ultimate criterion’ for Frege of what is to be regarded as a logical object.
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DOI 10.1093/mind/fzl983
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References found in this work BETA

Frege’s Conception of Numbers as Objects.Crispin Wright - 1983 - Critical Philosophy 1 (1):97.
Ueber Begriff und Gegenstand.Gottlob Frege - 1892 - Vierteljahrsschrift Für Wissenschaftliche Philosophie 16 (2):192-205.
Frege's Conception of Numbers as Objects.Crispin Wright - 1986 - Studia Logica 45 (3):330-330.

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Citations of this work BETA

Frege's Approach to the Foundations of Analysis (1874–1903).Matthias Schirn - 2013 - History and Philosophy of Logic 34 (3):266-292.
The Breadth of the Paradox.Patricia Blanchette - 2016 - Philosophia Mathematica 24 (1):30-49.

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