Spring tears down math geek t-shirt listing because it dared to mention the trademarked word 'zeta'

Data scientist told he faces ban, biz insists otherwise after pushback

On Tuesday, Tariq Rashid, a UK-based data scientist and author, tried to create a t-shirt design using on-demand print shop Spring to celebrate the Riemann zeta function, which is widely known among mathematicians and technical types.…