Tag Archives: block design

A new kind of design?

Rosemary and I have just put on the arXiv a paper prompted by a question by Valery Fedorov. Suppose that we are testing a number v1 of drugs on a number v2 of cancer types. To simplify the protocol, at … Continue reading

Posted in exposition | Tagged , , , , , | Leave a comment

The definition of a graph, 2

A few years ago, three consecutive speakers in the pure maths seminar at Queen Mary gave three entirely different definitions of a graph. The next speaker to appear was talking on a topic completely unconnected with graphs, but someone in … Continue reading

Posted in exposition | Tagged , , , , , , , , , | 8 Comments