"Gottlob Frege's (1848-1925) pioneering work in logic and the foundations of mathematics began with his Begriffsschrift (or concept-script) which played an early, influential role in the development of logic and analytic philosophy. One important philosopher who studied Frege's ideas was Rudolf Carnap (1891-1970), who attended Frege's classes on Begriffsschrift at the University of Jena. Discovered in the 1990s and presented here for the first time, Carnap's notes from these classes offer new information about Frege's teaching and his post-1903 views on logic after learning of Bertrand Russell's famous antinomy." "By looking at Frege's lectures on logic through the eyes of the young Carnap, this book casts new light on the history of logic and analytic philosophy. As two introductory essays by Gottfried Gabriel and by Erich H. Reck and Steve Awodey explain, Carnap's notes allow us to better understand Frege's deep influence on Carnap and analytic philosophy, as well as the broader philosophical matrix from which both continental and analytic styles of thought emerged in the 20th century."--BOOK JACKET.