- My Very First Book “Gina Says”, Now Published by “World Scientific”
- Itai Benjamini: Coarse Uniformization and Percolation & A Paper by Itai and me in Honor of Lucio Russo
- After-Dinner Speech for Alex Lubotzky
- Boaz Barak: The different forms of quantum computing skepticism
- Bálint Virág: Random matrices for Russ
- Test Your Intuition 33: The Great Free Will Poll
- Must-read book by Avi Wigderson
- High Dimensional Combinatorics at the IIAS – Program Starts this Week; My course on Helly-type theorems; A workshop in Sde Boker
- Stan Wagon, TYI 23: Ladies and Gentlemen: The Answer
Top Posts & Pages
- My Very First Book "Gina Says", Now Published by "World Scientific"
- Elchanan Mossel's Amazing Dice Paradox (your answers to TYI 30)
- TYI 30: Expected number of Dice throws
- Why Quantum Computers Cannot Work: The Movie!
- The Race to Quantum Technologies and Quantum Computers (Useful Links)
- Answer: Lord Kelvin, The Age of the Earth, and the Age of the Sun
- Amazing: Peter Keevash Constructed General Steiner Systems and Designs
- If Quantum Computers are not Possible Why are Classical Computers Possible?
Monthly Archives: April 2012
My previous post recommended a really nice talk by Jonathan Israel about human rights. Here is the link again. It is very recommended. Actually, I was in the audience and after the lecture, at the reception, I came to the … Continue reading
Today (April 27, 2012) it is precisely 213 years 7 months, and 29 days to the completion of the declaration of the rights of man, which makes it a perfect occasion to celebrate this remarkable human creation. Here is a … Continue reading
Dinitz’ conjecture The following theorem was conjectured by Jeff Dinitz in 1979 and proved by Fred Galvin in 1994: Theorem: Consider an n by n square table such that in each cell (i,j) you have a set with n or more elements. … Continue reading
Wolfgang Haken found an algorithm to tell if a knot is trivial, and, more generally with Hemion, if two knots are equivalent. Joel Hass, Jeff Lagarias and Nick Pippinger proved in 1999 that telling that a knot is unknotted is … Continue reading
The Virtually Haken Conjecture A Haken 3-manifold is a compact 3-dimensional manifold M which is irreducible (in a certain strong sense) but contains an incompressible surface S. (An embedded surface S is incompressible if the embedding indices an injection of its … Continue reading