Economy
92-Year-Old Mathematician and 15-Year-Old High School Student Solve the Four-Strand Problem
Years after retiring, Joan Bierman's 'mathematics drawer' opened unexpectedly following a thoughtful email from a young girl with a passion for algebra and an unusually original way of thinking. Years of joint work led them to the holy grail of topology.
· Source: TheMarker. Photo as published in the article
Years after retiring, Joan Bierman's 'mathematics drawer' opened unexpectedly following a thoughtful email from a young girl with a passion for algebra and an unusually original way of thinking. Years of joint work led them to the holy grail of topology.
