Frege
modernAnalytic Philosophy, Mathematical Logic, Logicism1848 – 1925
Gottlob Frege (1848–1925) was a German philosopher, logician, and mathematician widely regarded as the founder of modern mathematical logic and a central figure in the origins of analytic philosophy. His Begriffsschrift (1879) introduced quantificational logic, and his subsequent work developed logicism—the thesis that arithmetic is reducible to pure logic. His distinction between sense (Sinn) and reference (Bedeutung) remains foundational in philosophy of language.
Notable Achievements
1
Invented modern predicate (quantificational) logic in Begriffsschrift (1879)
2
Developed the sense/reference (Sinn/Bedeutung) distinction in philosophy of language
3
Formulated logicism: the program of reducing arithmetic to logical laws
4
Introduced the context principle: words have meaning only in the context of a proposition
5
Directly influenced Russell, Wittgenstein, and the subsequent analytic tradition