 Snapshots of modern mathematics
 Diderot Mathematical Forum 2013: “Mathematics of Planet Earth”
 Pierre de Fermat and Andrew Wiles in Czech Republic stamps
 Stefan Banach (March 30, 1892 – August 8, 1945)
 Diderot Mathematical Forums
 Guessing the Numbers
 What is mathematics for Ehrhard Behrends
 What is mathematics for Krzysztof Ciesielski
 The Three Ducks Trick
 What is mathematics for Franka Brueckler
All posts by Ehrhard Behrends

Mathematics in the underground, 2016
In the proseminar “Mathematics for the general public” at Freie Universität Berlin (by Professor Behrends, summer term 2016) activities for July 18 and 19, 2016 were prepared. These were the first two days of the European congress...
 Posted October 19, 2016

A ceremony for Banach and Nikodym in Krakow
Recently Krakow, an old city in the south of Poland, celebrated an event that happened hundred years ago. It was in the summer of 1916 when Hugo Steinhaus, already at that time a famous mathematician, walked in a...
 Posted October 17, 2016

Magical Invariants
What remains unchanging? On what can one rely? For centuries, mathematicians have searched for invariants, that is, to put it simply, quantities whose values do not change with respect to some operation under consideration. By Ehrhard Behrends...
 Posted February 1, 2016

What is mathematics for Ehrhard Behrends
This is a very difficult question, and there is probably no one answer to which all mathematicians would subscribe. We have collected a number of partial answers. There is great variation in the ambitions of the authors...
 Posted February 1, 2016

Magical mathematics: The Integers
I would like to introduce to you a little guessing game… By Ehrhard Behrends Choose a threedigit number and write it twice in succession. For example, if you chose 761, then you should write down 761 761. The...
 Posted February 1, 2016