### Author links

### Plus magazine

## Rachel Thomas

Rachel Thomas is the co-editor of *Plus* magazine, an online forum for the general public that publishes articles from the world's top mathematicians and science writers on topics as diverse as art, medicine, cosmology and sport. Before joining *Plus*, she was a maths consultant in Australia working for government and industry. She obtained her MSc in semigroup theory in 1998 from the University of Western Australia. She has edited the *Gazette of the Australian Maths Society, *developed and taught science-writing workshops for graduate students, and worked on the University of Oxford's Maths in the City project creating mathematical walking tours of London and Oxford and a virtual mathematical tour guide of the world. Together with Marianne Freiberger she has co-authored the popular maths books *Numericon* (Quercus, 2014) and *Maths Squared *(Quarto, 2016) and was editor on the book *50: Visions of Mathematics *(Oxford University Press, 2014).