43:20
publiée le 22 avril 2026
Transport optimal et mouvements de foules sous contrainte de congestion (Part 1)
De Bertrand Maury
Reverse Lagrangian surgery on filings
De Yu Pan
Apparaît dans la collection : Giroux 60 - Convexity in contact and symplectic topology
For an immersed filling of a topological knot, one can do surgery to resolve a double point with the price of increasing surface genus by 1. In the Lagrangian analog, one can do Lagrangian surgery on immersed Lagrangian fillings to treat a double point by a genus. In this talk, we will show that not all Lagrangian surgeries are reversible. Moreover, there are surgeries that can not be reversed in the Lagrangian world but are potentially able to be reversed in the smooth world.
