Monthly Archives: January 2014

Joel David Hamkins’ 1000th MO Answer is Coming

Joel David Hamkins’ profile over MathOverflow reads: “My main research interest lies in mathematical logic, particularly set theory, focusing on the mathematics and philosophy of the infinite. A principal concern has been the interaction of forcing and large cardinals, two … Continue reading

Posted in Mathematical logic and set theory, Mathematics over the Internet | Tagged , | 3 Comments

Amazing: Peter Keevash Constructed General Steiner Systems and Designs

Here is one of the central and oldest problems in combinatorics: Problem: Can you find a collection S of q-subsets from an n-element set X set so that every r-subset of X is included in precisely λ sets in the collection? … Continue reading

Posted in Combinatorics, Open problems | Tagged , , | 10 Comments

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