My love of the blackboard began in Warwick and Cambridge, where I studied. They had them everywhere – even in the toilets. And at home, too, I have a lovely big slate board. But this isn’t about me ...

The lecture on Tuesday is intended for all those interested in mathematics. The remaining lectures are intended for a more mathematically experienced audience. Refreshments will be served 30 minutes ...

Sven Trenholm does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...