Abstract: In 2012, a college friend of Dana Mackenzie sent him a recreational math problem involving horse races that took him a year to solve. Mackenzie’s friend had posed this problem to every mathematician he could, for 30 years, but had never found anyone who was either able to solve it or knew the answer. […]

Registration link: https://tinyurl.com/jolgorio118

Registration link: https://tinyurl.com/puentes-magia

Registration link: https://tinyurl.com/jolgorio119