Our Katie was on BBC Two last night! As part of the QI Christmas special, Katie told that old chestnut about infinitely many mathematicians walking into a bar.
Viewers in the UK can see the show on the iPlayer; Katie’s segment starts about 12 minutes in.
Friend of the Aperiodical James Grime made this video in 2009 discussing the arithmetic of the Twelve Days of Christmas song. Watch carefully and you might spot in the background the picture he keeps of himself that ages in his place.
The second annual Royal Statistical Society ‘statistics of the year’ have been announced. The Guardian reports that these include top prize for “90.5%, the proportion of plastic waste that has never been recycled”, and that other statistics awarded or commended involve Jaffa Cakes, poverty, gender equality, climate change and someone called Kylie Jenner. The RSS says “the Statistics of the Year aim to show the sometimes surprising stories that numbers can tell us about the world”.
Statistic of the year from the RSS.
Environment, Jaffa Cakes and Kylie Jenner star in statistics of year, at The Guardian.
I made this. Here’s how…
In what could be the most tenuous festive connection so far, we’ve found this lovely paper on folding polyominoes from other polyominoes. Maybe something to keep you occupied over those few days when all the festivities are over and everyone’s just sitting around eating chocolates… and playing with the foil wrappers? This post is part of…
This is astonishing. Designer and ‘data geek’ Nicholas Rougeux has painstakingly recreated all six books of Oliver Byrne’s Euclid on the web, following the original as closely as possible while adding links between propositions and even making the diagrams interactive.
If you’re familiar with Pascal’s triangle, you’ll know it has a lot of brilliant hidden patterns and features. One of my favourites is the Christmas Stocking Identity, also more prosaically called the Hockey Stick Identity. The identity states: $$ \sum_{i=r}^n \binom{i}{r} = \binom{n+1}{r+1} \qquad \textrm{ for } n, r \in \mathbb{N}, n > r $$…