Numberphile - For a limited time the sparkly “foil” version of our golden spiral T-Shirt is in stock again… US: https://teespring.com/en/NP-Seeds EU: https://teespring.com/en/NP-Seeds_EU | Facebook
Creaks Kids T-shirt | Amanita Design Store
parker square numberphile white and black and shir' Women's T-Shirt | Spreadshirt
Numberphile - The Trapped Knight Tour from our latest video now on a T-Shirt https://teespring.com/numberphile-trapped-knight | Facebook