€19.95
You all know Christian Hesse. He is a professor of mathematics with a chair in Stuttgart University (and sometimes Santa Barbara). He is also a prolific author who has published some of the most popular books on mathematics in Germany. Christian has also written a couple of well-received books on his special hobby, chess. And he has contributed to a large number of articles on our news page. On the right you see him, chatting with a friend.
Me? I started editing this news page in its database form twenty years ago, incidentally on September 12, 2001. On page 734 of our index you can see how it all started – and perhaps read the first article there. Very poignant.