When we needed a design for our Oxford Mathematics merchandise, we thought we didn't have a badge or coat of arms. Until we realised we did. At the entrance to our building is the Penrose tiling, our mathematical coat of arms.
So our designers, the excellent Stephane Harrison and his team at William Joseph, came up with the idea of the exploding tiles. They have now become our unofficial logo (if you can have such a thing), on all our merchandise and materials.
You can now sample our Penrose-inspired swag, from hoodies and fleeces to caps and beanies. And its mathematical Black Friday from today until 27th November. You'll get 15% off by using the code: GREEN15.