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Monthly Archives: December 2012
Lionel Pournin found a combinatorial proof for Sleator-Tarjan-Thurston diameter result
I just saw in Claire Mathieu’s blog “A CS professor blog” that a simple proof of the Sleator-Tarjan-Thurston’s diameter result for the graph of the associahedron was found by Lionel Pournin! Here are slides of his lecture “The diameters of associahedra” … Continue reading
Posted in Combinatorics, Computer Science and Optimization, Convex polytopes
Tagged Associahedron, Lionel Pournin
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Postoctoral Positions Available
Maybe I should say that (like every year but even more so) we do have funding for 1-2 postdoctoral positions in combinatorics, for 1-3 years starting in the next academic year (the time is flexible) here at the Hebrew University … Continue reading
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Dorit Aharonov’s on TEDx: A Feldenkrais lesson for the beginner scientist
Here is a lovely lecture starting with quantum computers, going through the Feldenkrais method, and ending with a mathematical puzzle. Click on the picture for the video of the talk. Here are Dorit’s four body-mind principles for learning: 1. Start … Continue reading
Angry Bird Skepticism
Lenore Holditch is a freelance writer. Here is what she wrote to me: “I love learning about new topics, so I am confident that I can provide valuable content for your blog on any topic you wish, else I can … Continue reading
The Privacy Paradox of Rann Smorodinsky
The following paradox was raised by Rann Smorodinsky: Rann Smorodinsky’s Privacy Paradox Suppose that you have the following one-time scenario. You want to buy a sandwich where the options are a roast beef sandwich or an avocado sandwich. Choosing … Continue reading
Combinatorics and more 