More from Chalkdust
- Discover the meaning of the coloured squares on the cover of issue 13
- We review the eighth of this year's nominees for the Book of the Year
- Yuliya Nesterova misses all the pockets, but does manage to solve some cubics
- Nira Chamberlain, one of the UK's top 100 scientists, shares his experiences as a black mathematician.
- Behind today's door... A binary magic card trick!
- Looking for a neat description of this useful matrix part-inverse