Save Big on Coursera Plus. 7,000+ courses at $160 off. Limited Time Only! Grab it Join this mathematics lecture from the Combinatorics of Fundamental Physics Workshop where MIT professor Alex Postnikov explores the concept of polypositroids at the Institute for Advanced Study's Wolfensohn Hall. Delve into advanced mathematical concepts during this 75-minute presentation that bridges combinatorics and fundamental physics, offering insights into this specialized area of mathematical research.