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 Hoi Nguyen and Melanie Wood: Remarkable Formulas for the Probability that Projections of Lattices are Surjective
 Petra! Jordan!
 The largest clique in the Paley Graph: unexpected significant progress and surprising connections.
 Thinking about the people of Wuhan and China
 Ringel Conjecture, Solved! Congratulations to Richard Montgomery, Alexey Pokrovskiy, and Benny Sudakov
 Test your intuition 43: Distribution According to Areas in Top Departments.
 Two talks at HUJI: on the “infamous lower tail” and TOMORROW on recent advances in combinatorics
 Amazing: Zhengfeng Ji, Anand Natarajan, Thomas Vidick, John Wright, and Henry Yuen proved that MIP* = RE and thus disproved Connes 1976 Embedding Conjecture, and provided a negative answer to Tsirelson’s problem.
 Do Not Miss: Abel in Jerusalem, Sunday, January 12, 2020
Top Posts & Pages
 Hoi Nguyen and Melanie Wood: Remarkable Formulas for the Probability that Projections of Lattices are Surjective
 Aubrey de Grey: The chromatic number of the plane is at least 5
 Konstantin Tikhomirov: The Probability that a Bernoulli Matrix is Singular
 Elchanan Mossel's Amazing Dice Paradox (your answers to TYI 30)
 Ringel Conjecture, Solved! Congratulations to Richard Montgomery, Alexey Pokrovskiy, and Benny Sudakov
 Answer: Lord Kelvin, The Age of the Earth, and the Age of the Sun
 Gil's Collegial Quantum Supremacy Skepticism FAQ
 Coloring Problems for Arrangements of Circles (and Pseudocircles)
 Amazing! Keith Frankston, Jeff Kahn, Bhargav Narayanan, Jinyoung Park: Thresholds versus fractional expectationthresholds
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Category Archives: Rationality
Is it Legitimate/Ethical for Google to close Google+?
Update April 2, 2019: the links below are not working anymore. Google Plus is a nice social platform with tens of millions participants. I found it especially nice for scientific posts, e.g. by John Baez, Moshe Vardi, or about symplectic … Continue reading
An Interview with Yisrael (Robert) Aumann
I was privileged to join Menachem Yaari and Sergiu Hart in interviewing Yisrael Aumann. The interview is in Hebrew. It is an initiative of the Israel Academy of Sciences and the Humanities. For our non Hebrew speakers here is in … Continue reading
Posted in Academics, Games, Geometry, Rationality
Tagged Menachem Yaari, Robert Aumann, Sergiu Hart
2 Comments
שינוי 2015 – שאלה לנתניהו
בנימין נתניהו, מדוע פרקת את הממשלה ערב מאבק גורלי בנושא קיומי עם נשיא ארצות הברית זה לא מסתדר העניין הזה: זה הרי חוסר אחריות נוראי לפרק את הממשלה ממש לפני עימות מכריע על נושא קיומי, אז מה הסיבה לכך זה כמו … Continue reading
Ehud Friedgut: Blissful ignorance and the KahnemanTversky paradox
Tversky, Kahneman, and Gili BarHillel (WikiPedia). Taken by Maya BarHillel at Stanford, summer 1979. The following post was kindly contributed by Ehud Friedgut. During the past week I’ve been reading, and greatly enjoying Daniel Kahneman’s brilliant book “Thinking fast … Continue reading
Another Forgotten Bet: Is Don Zagier About to Owe Me 1000 Shekels For The Proof of the ABC Conjecture?
Like everybody else I heard with great interest the news about the attempted solution of the ABC conjecture by Shinichi Mochizuki. (See, e.g., here, here, here, and here.) I did not think that this has much to with me … Continue reading
Posted in Number theory, Rationality
Tagged ABC conjecture, Don Zagier, Shinichi Mochizuki
8 Comments
Election Day
Vox populi, vox dei! Today is the general election day in Israel. This is an exciting day. For me election is about participation much more than it is about influence and I try not to miss it. This is why … 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 onetime scenario. You want to buy a sandwich where the options are a roast beef sandwich or an avocado sandwich. Choosing … Continue reading