Category Archives: Uncategorized

Sesqui-arrays

Rosemary Bailey, Tomas Nilson and I have just put a paper on the arXiv on this topic. I discussed related things here last year, but here is a reminder. A triple array is an r×c array whose entries are from … Continue reading

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

Impostor Syndrome

I have learned a new term: Impostor Syndrome. This came up in a report in the London Mathematical Society newsletter of a meeting in St Andrews on gender diversity in mathematics (which I didn’t attend). Impostor Syndrome is described by … Continue reading

Posted in Uncategorized | Tagged , | 3 Comments

Synchronization and separation in the Johnson schemes

Today a paper by Mohammed Aljohani, John Bamberg and me went on the arXiv on this topic. Here is a brief summary of what it is about. Synchronization comes in several flavours, and the point of the paper is to … Continue reading

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

Laszlo Babai in St Andrews

I promised to say a few words about Laci Babai’s visit to St Andrews. In an amazing performance, he gave five talks: one of nominally an hour at the Scottish Combinatorics Meeting (it was actually the last talk of the … Continue reading

Posted in Uncategorized | Leave a comment

A message

Last week my daughter and her family came for a short holiday. We went to East Sands where the children wrote messages on driftwood and threw them into the sea. Looking for replies, they found this: Is it a message … Continue reading

Posted in Uncategorized | Tagged | 4 Comments

ZFC is consistent!

Here is a small model of a large cardinal, from the Albertina Gallery in Vienna. His existence shows that ZFC is consistent.

Posted in Uncategorized | Tagged | 1 Comment

A golden age?

Was there a lost Golden Age for science? I am grateful to Ursula Martin for directing my attention to a paper by a geographer at Queen Mary, Kerry Holden, entitled “Lamenting the Golden Age: Love, Labour and Loss in the … Continue reading

Posted in Uncategorized | Tagged , , | 2 Comments