"Philosophy." . . "Analytische Philosophie." . . "Geschichte 1879-1925." . . . . . . . . . . "Frege" . . . . "Electronic books"@en . "Frege explained from arithmetic to analytic philosophy" . "Frege explained from arithmetic to analytic philosophy"@en . . . "Frege explained : From arithmetic to analytic philosophy" . . . "What is the number one? How can we be so sure that 2 + 2 = 4? These apparently simple questions have perplexed philosophers for thousands of years, but discussion of them was transformed by the German philosopher Gottlob Frege (1848-1925). No present-day investigation of the nature of numbers or the truth of mathematics can proceed in ignorance of Frege. Frege was convinced that the truths of arithmetic and of all mathematics are derived from self-evident logical truths. His attempt to prove this conviction in detail became his life's work, and it tragically failed when an unresolved contradi."@en . . . . . . "Frege explained" . . . . "Frege Explained"@en . "Frege explained : from arithmetic to analytic philosophy" . . . . "Analytische filosofie." . . "PHILOSOPHY / History & Surveys / Modern" . . "Logik." . . "Frege, Gottlob 1848-1925." . . "Philosophie." . . . . "philosophie analytique Frege, Gottlob." . . "Rekenkunde." . . "arithmétique Frege, Gottlob." . .