Explore a 24-minute IEEE conference talk on cut-equivalent trees and their optimality for min-cut queries. Delve into previous algorithms for constructing Gomory-Hu trees, min-cut data structures, and the equivalence between min-cut data structures and cut-equivalent trees. Learn about the Gomory-Hu algorithm description, tournament expansion, and the challenges of designing fast approximation algorithms. Gain insights from speakers Amir Abboud, Robert Krauthgamer, and Ohad Trabelsi as they discuss their findings and present approximation ideas for this complex graph theory topic.