Name der Zeitschrift: Nordic Wittgenstein Review Jahrgang: 2 Heft: 1 Seiten: 33-56.

The paper presents a formal explication of the early Wittgenstein's views on ontology, the syntax and semantics of an ideal logical language, and the propositional attitudes. It will be shown that Wittgenstein gave a language of thought analysis of propositional attitude ascriptions, and that his ontological views imply that such ascriptions are truth-functions of (and supervenient upon) elementary sentences. Finally, an axiomatization of a quantified doxastic modal logic corresponding to Tractarian semantics will be given.

It has been much debated whether Tractarian objects are what Russell would have called particulars or whether they include also properties and relations. This paper claims that the debate is misguided: there is no logical category such that Wittgenstein intended the reader of the Tractatus to understand his objects either as providing examples of or as not providing examples of that category. This is not to say that Wittgenstein set himself against the very idea of a logical category: quite the (...) contrary. However, where Russell presents his logical variety of particulars and the various types of universal, and Frege presents his of objects and the various types of function, Wittgenstein denies the propriety of such a priori expositions. Wittgenstein envisages a variety of logical types of entity but insists that the nature of these types is something to be discovered only through analysis. (shrink)

This paper starts with the presentation of an Aristotelian theory of negative properties. Against this backdrop, it then asks whether there could be objects that have solely negative properties, i.e., completely negative objects. This possibility is entertained by Wittgenstein in his Tractatus Logico-Philosophicus. The notion of a completely negative object is compared to the concepts of a nonexistent object, a nonconcrete object, and a nonactual object. Ultimately, it is argued that there can be no completely negative objects, because all negative (...) properties entail some positive properties. (shrink)

One of the main challenges faced by Russell's theory of judgement was to provide a satisfactory account of judgement that was not committed to the existence of true, false, or non-existent complex entities such as Meinongian objectives. In the study of the Russell-Wittgenstein debate on that theory, scholars never considered the idea that Wittgenstein might not have followed Russell on that issue. In this article. I address that question and hold, first, that problems raised by Russell's theory of judgement find (...) their solution in the picture theory. Then, I show that Wittgenstein hesitated for a long period of time in theNotebooksbetween a version of his solution which is committed to the existence of possible (non-existing) complex entities and one which is not. Finally, I argue that he did, along with Meinong, go for a committing version in theTractatus. (shrink)

Proposition 5.122 of Wittgenstein’s Tractatus has been the source of much puzzlement among interpreters, so much so that no fully satisfactory account is yet available. This is unfortunate, if only because the containment account of logical consequence has a venerable tradition behind it. Pasquale Frascolla’s interpretation of proposition 5.122 is based on a valid argument and one true premise. However, the argument explains sense containment only in an indirect way, leaving some crucial questions unanswered. Besides, Frascolla does not address the (...) issue of how to make sense containment notationally perspicuous, an essential theme in Wittgenstein’s reflections. In this paper, we elaborate on Frascolla’s account by looking at the issue through the Tractarian notion of logical space. Our analysis shows that, for containment to be fully appreciated, one should adopt a negative perspective on the notion of sense, in line with the exclusionary theory of conceptual content, as labelled by Ian Rumfitt. Besides this, we introduce and discuss two methods—one envisaged by Wittgenstein himself—for making sense containment notationally perspicuous. (shrink)