Cutting an oval pizza – video

As if there wasn’t enough maths/pizza news lately, the story has hit the red-tops recently that UK supermarkets are scamming consumers by offering them oval-shaped pizzas – marketed in the high-end/’Extra Special’ ranges, with more expensive (sounding) ingredients like mozzarella di bufala, roquito peppers and merguez sausage, and a distinctive pair of artisanally different radii. These pizzas apparently cost more per gram, because their elliptical shape means they’re actually smaller than a circle with the same diameter. Cue plenty of ‘costing you dough’ and ‘cheesed off’ puns.

While we’re not massively bothered by the pricing, the articles do raise, and then completely fail to address, an interesting point: an oval pizza is harder to cut into equally sized pieces! Luckily, maths is here to save the day. I found a nice method and made a video explaining how it works:

Take a look and improve your future pizza cutting technique!

Follow Women Friday: International Women’s Day 2017

As part of our series of ‘Follow Friday’ posts in which we suggest mathematical Twitter accounts you might like to follow, here’s a special International Women’s Day edition with some of our favourite mathematical women and related accounts. If you’d like the conversation in your feed to be less dominated by the Sausage Theorem, maybe consider adding a few to your lists. Put your own suggestions in the comments too!

Review: Hidden Figures

Mega-late to the party, I’ve now arrived back from a week lecturing in Indonesia and have found time to go and see the incredibly well-received and widely talked-about NASA women maths film, Hidden Figures. I’ve heard an incredible number of wildly positive responses to the film, from as long ago as January, and have been looking forward to it greatly.

The film is a painstaking and at times brutally realistic depiction of the struggles faced by African-Americans, and by women, during the era of the early space missions.

“I own more maths books by Martin Gardner than by women, is that bad?”

Today is International Women’s Day, so we’ve taken a moment to think about the woman mathematicians in our lives.

We each have fairly sizeable collections of maths books, which prompted CLP to wonder how many of them are by female authors. A quick scan of our respective bookshelves later, here’s what we found.

Happy Birthday to me

“Life moves very fast. It rushes from Heaven to Hell in a matter of seconds.”
― Paulo Coelho

This week, I was suddenly reminded of a fact I’d been meaning to keep track of, and I was disappointed to discover that even though I always endeavour to remember birthdays and holidays (mainly due to a system of elaborate reminders, notes and excessive list-making), I’d missed a hugely significant anniversary. Shortly after the clock struck midnight on New Year’s eve, I had passed one billion seconds old.