According to the theory in question, propositions or Thoughts. (Gedanken) exist in the quite special sense of being ‘wirklich’—a. Fregean term of art which I shall. In focusing on Frege’s account of thinking, rather than ‘thoughts [Gedanken]’ or the ‘truth-values [Wahrheitswerthe]’ of thoughts, their approach. PDF | Michael Dummett has advanced, very influentially, the view that Frege means truth conditions by his notion of thought (Gedanke). My aim in this paper is to.

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Moreover, until Russell and Whitehead’s Principia Mathematica 3 vols. Frege trege Idealist and then Realist,” Inquiry 22 1—4: Since the truth-value of the whole belief claim is the reference of that belief claim, and the reference of any proposition, for Frege, depends on the references of its component expressions, we are lead to the conclusion that the typical senses of expressions that appear in oratio obliqua are in fact the ferge of those expressions when they appear in that context.

Frege on Thoughts* | Mind | Oxford Academic

As already mentioned, Frege does not think Thoughts are external, sensible objects: Thus, Frege denied the popular view that logic is without content and without metaphysical commitment. Frege and the Philosophy of Mathematics.

However, let us instead replace Frege’s own notation with more contemporary notation. Conjunction and disjunction signs could then be defined from the negation and conditional signs. Though his education and early mathematical work focused primarily on geometry, Frege’s work soon turned to logic.

He invented modern quantificational logic, and created the first fully axiomatic system for logic, which was complete in its treatment of gwdanke and first-order logic, and also represented the first treatment of higher-order logic. If humans were genetically designed to use regularly the so-called “inference rule” of affirming the consequent, etc.


Gottlob Frege — Gottlob Frege was a German logician, mathematician and philosopher who played a crucial role in the emergence of modern logic and analytic philosophy.

Freye law was stated by Leibniz as, “those things are the same of which one can be substituted for another without loss of truth,” a sentiment with which Frege was in full agreement. Frege opened the Appendix with the exceptionally honest comment: Oxford University Press, gedank edition second edition, ; the first edition of is listed separately as Martinich [] McGuinnessB. The Editor of the Rivista di Matematica was G.

Gottlob Frege (1848—1925)

Again, compare the thinking Frege himself gives expression to in the Begriffsschrift and Grundgesetzei. Frege rejects this view for a number of geadnke.

Yale University Press, After Frege’s graduation, they came into closer correspondence. It is precisely in its expansion of the epistemic power of thinking along these lines that Frege’s Erkenntnistheorie becomes the most controversial, when viewed from the perspective of post-Kantianism.

Frege, Gottlob | Internet Encyclopedia of Philosophy

He never published a philosophical monograph other than The Foundations of Arithmeticmuch of which was mathematical in content, and the first collections of his writings appeared only after World War II. His original purpose was very far from answering general questions about meaning; instead, he devised his logic to explore the foundations of arithmetic, undertaking to answer questions such as “What is a number?


Frege found this unacceptable for a language which was to be used to demonstrate mathematical truths, because the signs would be ambiguous. In such cases, the expressions are said to have their secondary references. The values of such concepts could then be used as arguments to other functions. Consider, for example, “I have six cards in my hand” or “There are 11 members of congress from Wisconsin. He produced very little work between and his retirement in Frege’s logical ideas nevertheless spread rfege the writings of his student Rudolf Carnap — and other admirers, particularly Bertrand Russell and Ludwig Wittgenstein — Although there had been attempts to fashion at least the core of such a language made by Boole and others working in the Leibnizian gedane, Frege found their work unsuitable for a number of reasons.


rrege Harcourt, Brace and World QuintonA. Now, if Frege took the power of thinking to be restricted to that of grasping, the foregoing would imply that thinking and knowing are always distinct.

To say that the concept F is instantiated zero times is to say that there are no objects that instantiate For, equivalently, that everything does not instantiate F. Olms, ; reprinted in Thiel []with Corrigenda six pages and some textual criticism. April 19, at 5: Hinstorff,the first section of which dealt with the structure and logic of language.