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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In effect, Frege invented axiomatic predicate logicin large part thanks to his invention of quantified variableswhich eventually became ubiquitous in mathematics and logic, and which solved the problem of multiple generality.

We have seen that Frege was a harsh critic of psychologism in logic. While “identity”, as Frege uses the term, is a relation holding only between objects, Frege believes that there is a frrege similar to identity that holds between functions just in case they always share the same value for every argument. Most of these axioms were carried over from his Begriffsschriftthough not without some significant changes. Frege’s commitment to the sufficiency of the power of thinking to generate genuine logical, arithmetical knowledge on its own that places him by his own lights in such stark opposition to the Rrege tradition’s commitment to the necessity of combining thinking with some other sort of mental activity viz.

Frege eschews several commonsense uses of the word before stating that the sort of truth he wishes to discuss is that which is sought out by the sciences The values of such concepts could then be used as arguments to other functions.

However, he was not able to write much or publish anything about his new theory. Clarendon CopiI. Exposition of the System. Kraal in McGuinness [] pp. Frege’s Theory of Sense and Reference. This further restriction seems necessary since Frege accepts that all sciences e.

See the entry on Russell’s Paradox for more details.

Gottlob Frege

His contributions include the development of modern logic in the Begriffsschrift and work in the foundations of mathematics. As Frege understands this, it means that if two expressions have the same reference, they should be able to replace each other within any proposition without changing the truth-value of that proposition.


Frege probably lived in Wismar until ; in the years fregr he is known to have studied at the Gymnasium in Wismar.

Yale University Press MartinichA. Yet it is only by accounting for the more robust epistemic productivity that Frege means to ascribe to thinking, beyond its receptivity in grasping, that we can hope to take the full measure of Frege’s ambitious and revolutionary claim vrege the epistemic significance of thinking itself: Nevertheless, he was promoted once again innow to the position of Honorary Ordinary Professor.

Frege’s Conception of Numbers as Objects.

Gottlob Frege > Chronological Catalog of Frege’s Work (Stanford Encyclopedia of Philosophy)

For example, if we consider the propositions:. Appleton-Century-Crofts FurthM. As we shall see belowFrege was also committed to other logical entities such as senses and thoughts. In Frege’s view, unlike objects, all functions are “unsaturated” insofar as they require arguments to yield values.

The natural numbers then consist of zero, the successor of zero onethe successor of the successor of zero twoand so on ad infinitum. It is easy to define the relation of membership of a set or extension in Frege’s system; Russell then drew attention to “the set of things x that are such that x is not a member of x “.

Suppose that ” H ” stands for this concept, and ” a ” is a constant for Aristotle, and ” b ” is a constant for the city of Boston. According to the Introduction to Gabriel []these are Frege’s lecture notes gedank lectures given at the University of Jena in the Summer Semester of To purchase short term access, please sign in to your Oxford Academic account above. You are commenting using your Facebook account.

The sense of a complete proposition is what it is we understand when we understand a proposition, which Frege calls “a thought” Gedanke. Hermann Pohle, ; reprinted in Angelelli [] pp.

Frege then uses this to ftege one. Here we can see the connection with the understanding of number expressions as being statements about concepts.


Yale University Press, He also presented significant criticisms against rival views. University of Chicago Press, Frege’s logicism was limited to arithmetic; unlike other important historical logicists, such as Russell, Frege did not think that geometry was a branch of logic.

An Introduction to His Philosophy. To say that F is instantiated one time is to say there is an object x that instantiates Fand that for all objects yeither y does not instantiate F or y is x.

Reprint of the edition of Frege [] and [a]with Corrigenda. Olms contains the English version of Frege [] AustinJ. Frwge diagrammatic notation that Frege used had no antecedents and has had no imitators since. Since the truth-value of the whole belief claim is the reference of that belief claim, frrege 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 references of those expressions when they appear in that context.

Mathematical truths are objective, not subjective. Views Read Edit View history. He thought similarly about psychologism in mathematics. Exactly what is it that makes a sense a “way of determining” or “mode of presenting” a reference?

Translated as The Foundations of Arithmetic: To Frege, selves — conscious entities that possess Ideas — cannot be explained in terms of Ideas. Philosophical Library SalmonN. Translated by Peter Long and Roger White. Another heavy blow came after Frege’s death. In this, Frege’s views on the nature of cardinality were in part anticipated by Georg Cantor.

Both were also principals of the school at various points: Let me first situate Garavaso and Vassallo’s approach within recent Frege scholarship.