- Petra! Jordan!
- The largest clique in the Paley Graph: unexpected significant progress and surprising connections.
- Thinking about the people of Wuhan and China
- 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
- 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)
- Answer: Lord Kelvin, The Age of the Earth, and the Age of the Sun
- A sensation in the morning news - Yaroslav Shitov: Counterexamples to Hedetniemi's conjecture.
- Gil's Collegial Quantum Supremacy Skepticism FAQ
- Coloring Problems for Arrangements of Circles (and Pseudocircles)
Category Archives: Economics
There is a class of children that have just finished elementary school. Now they all move from elementary school to high school and classes are reshuffled. Each child lists three friends, and the assignment of children into classes ensures that … Continue reading
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
GK (2019): Can you base world economy on horse races? Here is an old unpublished draft from 2008 that I did not complete, which was inspired by the economic crisis at that time. (It also felt a little over the … Continue reading
Sergiu Hart raises a very interesting idea regarding elections. Consider the Brexit referendum. Sergiu proposes to have two rounds two weeks apart. Every voter can vote in each, and the votes of both rounds add up! The outcomes of … Continue reading
Last week I took a bus from Tel Aviv to Jerusalem and I saw (from behind) a person that I immediately recognized. It was Nimrod Megiddo, from IBM Almaden, one of the very first to relate game theory with complexity … Continue reading
How many women can you find on this poster announcing the 25th Jerusalem School in Economics Theory devoted to Matching and Market Design? Please respond to the poll:
Indeed, most people got it right! Bundling sometimes increases revenues, sometimes keeps revenues the same, and sometimes decreases revenues. In fact, this is an interesting issue which was the subject of recent research effort. So here are a few … Continue reading
One item You have one item to sell and you need to post a price for it. There is a single potential buyer and the value of the item for the buyer is distributed according to a known probability distribution. It … Continue reading
You run a single-item sealed bid auction where you sell an old camera. There are three bidders and the value of the camera for each of them is described by a certain (known) random variable: With probability 0.9 the value … Continue reading
We are considering the stable marriage theorem. Suppose that there are n men and n women. If the preferences are random and men are proposing, what is the likely average women’s rank of their husbands, and what is the likely average … Continue reading