Example image of eyePlorer eyePlorer map for 'Gottlob Frege': Germany Logic Mathematics Philosophy Analytic philosophy Bertrand Russell Giuseppe Peano Mecklenburg-Schwerin Mecklenburg-Vorpommern Wismar High school Married and maiden names Poles Language Textbook Gymnasium (school) Poetry University of Jena North German Confederation Academic term Lecture Ernst Abbe Classical electromagnetism Complex analysis Galvanism Gravitation Mechanics Solid Carl Zeiss AG Alfred Clebsch Applied physics Electricity Ernst Christian Julius Schering Göttingen Philosophy of religion Rudolf Hermann Lotze Wilhelm Eduard Weber Begriffsschrift Function (mathematics) Variable (mathematics) Axiomatic system Predicate logic Problem of multiple generality Quantification Alfred North Whitehead Alfred Tarski Gödel's incompleteness theorems Kurt Gödel Principia Mathematica Theory of descriptions