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 Polymath10, Post 2: Homological Approach
 Polymath10: The Erdos Rado Delta System Conjecture
 Convex Polytopes: Seperation, Expansion, Chordality, and Approximations of Smooth Bodies
 Igor Pak’s collection of combinatorics videos
 EDP Reflections and Celebrations
 Séminaire N. Bourbaki – Designs Exist (after Peter Keevash) – the paper
 Important formulas in Combinatorics
 Updates and plans III.
 NogaFest, NogaFormulas, and Amazing Cash Prizes
Top Posts & Pages
 The KadisonSinger Conjecture has beed Proved by Adam Marcus, Dan Spielman, and Nikhil Srivastava
 Polymath10, Post 2: Homological Approach
 Polymath10: The Erdos Rado Delta System Conjecture
 Four Derandomization Problems
 Believing that the Earth is Round When it Matters
 Updates and plans III.
 NogaFest, NogaFormulas, and Amazing Cash Prizes
 Why is Mathematics Possible: Tim Gowers's Take on the Matter
 New Ramanujan Graphs!
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Category Archives: Mathematics to the rescue
Angry Birds Update
Angry birds peace treaty by Eretz Nehederet Arqade A few years ago I became interested in the question of whather new versions of the computer game “Angry Birds” gradually makes it easier to get high scores. Devoted to the idea of … Continue reading
In how many ways you can chose a committee of three students from a class of ten students?
The renewed interest in this old post, reminded me of a more recent event: Question: In how many ways you can chose a committee of three students from a class of ten students? My expected answer: which is 120. Alternative … Continue reading
Posted in Mathematics to the rescue, Riddles, Teaching
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Another way to Revolutionize Football
The angle of Victoria Beckham’s hat (here in a picture from a recent wedding) is closely related to our previous post on football One of the highlights of the recent Newton Institute conference on discrete harmonic analysis was a football … Continue reading
Believing that the Earth is Round When it Matters
A world map. Canada seems much bigger than Israel. Note, however, that in the map countries near the equator looks smaller than they are. Update: The roundearth hypothesis is clearer to the people of New Zealand; see the comments section. … Continue reading
Mathematics to the Rescue: Computing the Root of all Evil
Michael Joswig pointed my attention to the following unbelievable front page of the Frankfurter Allgemeine.
What can the Second Prize Possibly be?
You are guaranteed to win one of the following five prizes, the letter says. (And it is completely free! Just 6 dollars shipping and handling.) a) a highdefinition hugescreen TV, b) a video camera, c) a yacht, d) a decorative … Continue reading
The Mystery Beeping Riddle
We came back from the airport with our daughter who has just landed after a fourmonth trip to India. The car was making a strange beep every so often. Maybe it is an indicator signal that should have … Continue reading
Posted in Mathematics to the rescue, Rationality, Riddles
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