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Recent Posts
 Next Week in Jerusalem: Special Day on Quantum PCP, Quantum Codes, Simplicial Complexes and Locally Testable Codes
 Happy Birthday Ervin, János, Péter, and Zoli!
 My Mathematical Dialogue with Jürgen Eckhoff
 Test Your Intuition (23): How Many Women?
 Happy Birthday Richard Stanley!
 Influence, Threshold, and Noise
 Erdős Lectures 2014 – Dan Spielman
 Answer to Test Your Intuition (22)
 Test your intuition (22): Selling Two Items in a Bundle.
Top Posts & Pages
 The KadisonSinger Conjecture has beed Proved by Adam Marcus, Dan Spielman, and Nikhil Srivastava
 Answer: Lord Kelvin, The Age of the Earth, and the Age of the Sun
 Test Your Intuition (23): How Many Women?
 Why is Mathematics Possible: Tim Gowers's Take on the Matter
 Believing that the Earth is Round When it Matters
 My Mathematical Dialogue with Jürgen Eckhoff
 Five Open Problems Regarding Convex Polytopes
 New Ramanujan Graphs!
 Why Quantum Computers Cannot Work: The Movie!
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Category Archives: Updates
Pictures from Recent Quantum Months
A special slide I prepared for my lecture at Gdansk featuring Robert Alicki and I as climber on the mountain of quantum computers “because it is not there.” It has been quite a while since I posted here about quantum … Continue reading
Posted in Conferences, Quantum, Updates
Tagged Aram Harrow, Connie Sidles, John Sidles, Michal Horodecki, Michel Dyakonov, Quantum computers, Rico Picone, Robert Alicki, Updates, Yuri Gurevich
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Many Short Updates
Things in Berkeley and later here in Jerusalem were very hectic so I did not blog much since mid October. Much have happened so let me give brief and scattered highlights review. Two “real analysis” workshops at the Simons Institute … Continue reading
Posted in Conferences, Updates
4 Comments
NatiFest is Coming
The conference Poster as designed by Rotem Linial A conference celebrating Nati Linial’s 60th birthday will take place in Jerusalem December 1618. Here is the conference’s webpage. To celebrate the event, I will reblog my very early 2008 post “Nati’s … Continue reading
Posted in Combinatorics, Computer Science and Optimization, Conferences, Updates
Tagged Nati Linial
2 Comments
More around Borsuk
Piotr Achinger told me two things abour Karol Borsuk: From Wikipedea: Dunce hat Folding. The blue hole is only for better view Borsuk trumpet is another name for the contractible noncollapsible space commonly called also the “dunce hat“. (See … Continue reading
Simons@UCBerkeley
Raghu Meka talking at the workshop I spend the semester in Berkeley at the newly founded Simons Institute for the Theory of Computing. The first two programs demonstrate well the scope of the center and why it is needed. One program … Continue reading
Posted in Conferences, Updates
1 Comment
The KadisonSinger Conjecture has beed Proved by Adam Marcus, Dan Spielman, and Nikhil Srivastava
…while we keep discussing why mathematics is possible… The news Adam Marcus, Dan Spielman, and Nikhil Srivastava posted a paper entitled “Interlacing Families II: Mixed Characteristic Polynomials and the KadisonSinger Problem,” where they prove the 1959 KadisonSinger conjecture. (We discussed part … Continue reading
Polymath8: Bounded Gaps Between Primes
Yitang Zhang’s very recent shocking paper demonstrated that bounded gaps between primes occur infinitely often, with the explicit upper bound of 70,000,000 given for this gap. Polymath8 was launched for the dual purpose of learning Zhang’s proof and improving the upper bound … Continue reading
Posted in Mathematics over the Internet, Number theory, Updates
Tagged Polymath8, Twin primes conjecture
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Why is mathematics possible?
Spectacular advances in number theory Last weeks we heard about two spectacular results in number theory. As announced in Nature, Yitang Zhang proved that there are infinitely many pairs of consecutive primes which are at most 70 million apart! This is a sensational achievement. … Continue reading
Dan Mostow on Haaretz and Other Updates
Enlightenment at a red traffic light Wolf Prize laureate Prof. George Daniel Mostow made his greatest scientific breakthrough while driving. Haaretz tells the story of how Dan Mostow reached his breakthrough known as Mostow’s rigidity theorem. Congratulations, Dan! FrenchIsreali Meeting … Continue reading