This number of the All Squared podcast contains the final third of our interview with the inestimable David Singmaster, and then a bit from CP about his favourite book, “A treatise on practical arithmetic, with book-keeping by single entry“, by William Tinwell.

The first part of the interview, and plenty of links to go with it, were in Number 5 of the podcast.

Here are some links to the things we referred to in this podcast:

• The Casa di Galileo.


• The Internet Archive has scanned in Dickson’s History of the Theory of Numbers (and Volume 2 and Volume 3).


• David’s notes are written in the SCRIPT markup language. If you know anything about it and have an idea of how to put it on the web, please get in touch.


• The Internet Archive also has a scanned-in copy of the fifth edition of Christian’s favourite book, A Treatise of Practical Arithmetic (the “of” seems to have changed to “on” for the sixth edition).


• Tynemouth Market.


• The MathsJam annual conference is attended by not just David, Katie and CP, but a whole load of people who are really passionate about recreational maths in all its forms. Registration for the 2013 meeting has just opened – you know what to do!

Finally, here are some pictures of Christian’s favourite book, so you don’t just have to imagine what he was talking about:

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