Monthly Archives: November 2012

A few weeks ago, arguably the greatest fan of cp4space invited me to his birthday party at the Eagle. As I mentioned in my speech, this was where Watson and Crick unveiled their proposed double-helix structure of DNA. Interestingly, the … Continue reading →

Hunter Spink gave me an interesting problem about a beach ball inscribed in a wire tetrahedron, since its most elegant solution uses techniques explored in the tenth chapter of Mathematical Olympiad Dark Arts. Rather than give you the problem now, … Continue reading →

Alexander Betts (nee Luke) posed an interesting problem in combinatorial geometry for the Romanian Masters of Mathematics 2011: We have a finite set S of n points in the plane, {A1, A2, …, An}, such that (for all i and j) the … Continue reading →

It’s Guy Fawkes Night now and I’ve had to update the seasonal banner yet again. There are a few late items of news I would like to mention: Firstly, thanks go to everyone who has sent me feedback regarding MODA; I have … Continue reading →

The P versus NP conjecture essentially asks whether any problem whose solution can be easily verified can also be easily solved. Here, ‘easily’ technically means ‘computed in polynomial time on a Turing machine’. If you think for a moment, it … Continue reading →