Page "Gottlob Frege" Paragraph 5

His other notable university teachers were Christian Philipp Karl Snell ( 1806 – 1886 ) ( subjects: use of infinitesimal analysis in geometry analytical geometry of planes, analytical mechanics, optics, physical foundations of mechanics ); Hermann Karl Julius Traugott Schaeffer ( 1824 – 1900 ) ( analytical geometry, applied physics, algebraic analysis, on the telegraph and other electronic machines ); and the famous philosopher Kuno Fischer ( 1824 – 1907 ) ( Kantian and critical philosophy ).