Tag Archives: Guest blogger

Test Your Intuition 53 by Ehud Friedgut: Which Way to Ride Your Bike

Posted on September 15, 2023 by Gil Kalai

This post was kindly written by Ehud Friedgut. Shana Tova (= Happy New Jewish Year) to all our readers. The following is a real-life question. I recently rode my bike around a closed track. The track consists of a flat … Continue reading →

Posted in Guest post, Sport, Test your intuition | Tagged , , | 4 Comments

Ladies and Gentlemen, Stan Wagon: TYI 32 – A Cake Problem.

Posted on October 19, 2017 by Gil Kalai

The following post was kindly contributed by Stan Wagon. Stan (Wikipedea) is famous for his books, papers, snow-sculptures, and square-wheels bicycles (see picture below) !     A round cake has icing on the top but not the bottom. Cut out a … Continue reading →

Posted in Combinatorics, Guest blogger, Test your intuition | Tagged , , | 8 Comments

Amir Ban on Deep Junior

Posted on June 25, 2008 by Gil Kalai

Ladies and Gentelmen: Amir Ban (right, in the picture above) the guest blogger, was an Israeli Olympiad math champion in the early 70s, with Shay Bushinsky he wrote Deep Junior, and he is also one of the inventors of the “disc on … Continue reading →

Posted in Games, Guest blogger | Tagged , , , | 15 Comments