Gottlob Frege (GER)

Friedrich Ludwig Gottlob Frege (German: [ˈɡɔtloːp ˈfreːɡə]; 8 November 1848 – 26 July 1925) was a German mathematician, logician and philosopher. He is considered to be one of the founders of modern logic and made major contributions to the foundations of mathematics. He is generally considered to be the father of analytic philosophy, for his writings on the philosophy of language and mathematics. While he was mainly ignored by the intellectual world when he published his writings, Giuseppe Peano (1858–1932) and Bertrand Russell (1872–1970) introduced his work to later generations of logicians and philosophers.

Important Works:

Logic, foundation of arithmetic

Begriffsschrift, eine der arithmetischen nachgebildete Formelsprache des reinen Denkens (1879). Halle a. S.
English: Concept Notation, the Formal Language of the Pure Thought like that of Arithmetics.

Die Grundlagen der Arithmetik: eine logisch-mathematische Untersuchung über den Begriff der Zahl (1884). Breslau.
English: The Foundations of Arithmetic: the logical-mathematical Investigation of the Concept of Number.

Grundgesetze der Arithmetik, Band I (1893); Band II (1903). Jena: Verlag Hermann Pohle.
English: Basic Laws of Arithmetic, translated and edited with an introduction by Montgomery Furth (1964). This work is a translation of only part of Grundgesetze der Arithmetik. ISBN 978-0-520-04761-7

Philosophical studies

Function and Concept (1891)
Original: Funktion und Begriff : Vortrag, gehalten in der Sitzung; vom 9. Januar 1891 der Jenaischen Gesellschaft für Medizin und Naturwissenschaft, Jena, 1891;
In English: Function and Concept.

"On Sense and Reference" (1892)
Original: "Über Sinn und Bedeutung", in Zeitschrift für Philosophie und philosophische Kritik C (1892): 25–50;
In English: "On Sense and Reference", alternatively translated (in later edition) as "On Sense and Meaning".

"Concept and Object" (1892)
Original: "Über Begriff und Gegenstand", in Vierteljahresschrift für wissenschaftliche Philosophie XVI (1892): 192–205;
In English: "Concept and Object".

"What is a Function?" (1904)
Original: "Was ist eine Funktion?", in Festschrift Ludwig Boltzmann gewidmet zum sechzigsten Geburtstage, 20. February 1904, S. Meyer (ed.), Leipzig, 1904, pp. 656–666 (Internet Archive: [2], [3], [4]);
In English: "What is a Function?".

Logical Investigations (1918–1923). Frege intended that the following three papers be published together in a book titled Logische Untersuchungen (Logical Investigations). Though the German book never appeared, the papers were published together in Logische Untersuchungen, ed. G. Patzig, Vandenhoeck & Ruprecht, 1966, and English translations appeared together in Logical Investigations, ed. Peter Geach, Blackwell, 1975.
1918–19. "Der Gedanke: Eine logische Untersuchung" ("Thought: A Logical Investigation"), in Beiträge zur Philosophie des Deutschen Idealismus I: 58–77.
1918–19. "Die Verneinung" ("Negation") in Beiträge zur Philosophie des deutschen Idealismus I: 143–157.
1923. "Gedankengefüge" ("Compound Thought"), in Beiträge zur Philosophie des Deutschen Idealismus III: 36–51.
Articles on geometry[edit]
1903: "Über die Grundlagen der Geometrie". II. Jahresbericht der deutschen Mathematiker-Vereinigung XII (1903), 368–375;
In English: "On the Foundations of Geometry".
1967: Kleine Schriften. (I. Angelelli, ed.) Wissenschaftliche Buchgesellschaft. Darmstadt, 1967 és G. Olms, Hildescheim, 1967. "Small Writings," a collection of most of his writings (e.g., the previous), posthumously published.

Source: http://en.wikipedia.org/wiki/Gottlob_Frege