Heyting Day 2019

Frege’s Der Gedanke

8 March 2019 from 10:00 to 16:30 hrs
Trippenhuis KNAW, Kloveniersburgwal 29, 1011 JV Amsterdam
020 551 0859
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Heyting Day 2019 is devoted to Frege’s momentous philosophical paper Der Gedanke (1918-1919), which addresses such fundamental questions as 'What is truth? What is meaning? How can thoughts be shared?' The talks organised on Heyting Day provide historical background and illustrate how Frege’s work is still relevant to the lively contemporary debate. 


  • Wolfgang Kienzler, professor of Philosophy, Friedrich-Schiller-Universität Jena, Institut für Philosophie – Frege's aim and strategy in Der Gedanke
  • Paul Dekker, researcher University of Amsterdam, Institute for Logic, Language and ComputationFrege’s principles
  • Göran Sundholm, professor of Philosophy of Mathematics and of Logic, Leiden University, Institute for Philosophy – From beurteilbare Inhalt to Sinn des Wahrheitswertnames. Frege's early views on Der Gedanke
  • Sebastian Rödl, professor of Practical Philosophy, Universität Leipzig, Institut für Philosophie – I think — Y thinks

The symposium will be conducted in English.

Gottlob Frege

Frege (1848-1925) was a German mathematician, logician and philosopher. He is considered one of the pioneers of modern mathematics.