Quotable maths: Galileo Aug 9, 2012 A selection of other posts Aug 5, 2015 Ask Uncle Colin: a proof with logs in Nov 25, 2013 How I factorise quadratics these days Apr 8, 2013 The Mathematical Ninja's Rules of Fractions Oct 10, 2012 Book review: 17 Equations That Changed The World, by Ian Stewart subscribe via RSS