So we made a purchase, and it was going to be delivered. The company has been great about keeping us informed. Also, we got this in an email:

Seen today - hard to disagree:

To the Times:

During my many years in the classroom my colleagues and I rarely noticed if the headteacher was not in school. However, if the tea lady was absent everyone knew.

Dr N Flavell, Sheffield

That's it - MathsJam is about to start. 176 delegates, 52 talks, Cakes, Competition Competition, MathsJamJam, and more : ...

Watch for the tweets.

Here's a nice little challenge - what's the first false positive from this routine?

Found the photo! I've always *hated* selfies, and never look good in them, but here I am with @TheAntonDuBeke - as I say, a lovely man.

Suddenly realised that we are pretty much at the limit for the MathsJam weekend - let me know if you want to come but haven't paid.

Very simple code to generate left-truncatable primes - what would you do differently?

To assist @ChurchillHelp - who assure me that there won't be charges when I reply to their survey, here's a screenshot:

Bookings for the MathsJam annual gathering going well: - in just a few weeks we'll open the talks booking page.

Bookings for the MathsJam Annual Gathering have opened, and as usual, there is the initial immediate surge. Here's the progress ...

If you're interested, visit

Show more

A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.

Use \( and \) for inline LaTeX, and \[ and \] for display mode.