All posts by Ehrhard Behrends

About Ehrhard Behrends

  • mathu3
    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
    • 0
  • krak2
    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
    • 0
  • 3_playing_cards
    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
    • 0
  • golden-ratio
    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
    • 0
  • 3_playing_cards
    Magical mathematics: The Integers

    I would like to introduce to you a little guessing game… By Ehrhard Behrends Choose a three-digit 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
    • 0
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