Quotable Maths: Carroll Nov 1, 2012 Today is my birthday, by the way((Unless you’re reading this on November 15th in any given year, this is not true.))! Amazon vouchers, if you’re so inclined. Ta! A selection of other posts Feb 10, 2020 Proofs May 22, 2017 Mr Penberthy's Problem Jun 15, 2016 Ask Uncle Colin: An absolute quadratic inequality Feb 2, 2015 The Mathematical Ninja shuttles some numbers subscribe via RSS