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Births on June 21

Michael M. Richter
1938Jun, 21

Michael M. Richter

Michael M. Richter, German mathematician and computer scientist
Michael M. Richter (June 21, 1938 – July 10, 2020) was a German mathematician and computer scientist. Richter is well known for his career in mathematical logic, in particular non-standard analysis, and in artificial intelligence, in particular in knowledge-based systems and case-based reasoning (CBR, Fallbasiertes Schließen). He is worldwide known as pioneer in case-based reasoning.

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Events on 1938

  • 18Feb

    Nanking Massacre

    Second Sino-Japanese War: During the Nanking Massacre the Nanking Safety Zone International Committee is renamed "Nanking International Rescue Committee" and the safety zone in place for refugees falls apart.
  • 12Mar

    Austria

    Anschluss: German troops occupy and absorb Austria.
  • 23Sep

    Munich Agreement

    Mobilization of the Czechoslovak army in response to the Munich Agreement.
  • 30Sep

    Munich Agreement

    Britain, France, Germany and Italy sign the Munich Agreement, allowing Germany to occupy the Sudetenland region of Czechoslovakia.
  • 30Oct

    The War of the Worlds (radio drama)

    Orson Welles broadcasts his radio play of H. G. Wells's The War of the Worlds, causing anxiety in some of the audience in the United States.