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 ...

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 ...

The William Reinhardt Memorial Lecture in the Philosophy of Mathematics was founded to commemorate the life of William Reinhardt, Professor of Mathematics at the University of Colorado from 1967 until ...