On Tuesday 28th February we will have a double bill in our geometry seminar. The first talk will be given by Dmitri Tonkonog at 11h-12h, in Room O8.08 of building NO. His title is “*Refined curve counts for immersed Lagrangians, with applications*” and his abstract is below. The second talk is given by Georgios Dimitroglou Rizell at 13h30-14h30, in the same room. Georgios’s title is “*The wrapped Fukaya category of a Weinstein manifold is generated by the Lagrangian cocore discs*” and that link will take you to his abstract.

One of the simplest open Gromov-Witten invariants is the count of holomorphic Maslov index 2 disks with boundary on a smooth Lagrangian submanifold. I will explain a “refined way” to count such disks on an immersed Lagrangian, focussing on dimension 4, and the surrounding context of local mirror symmetry. As an application of refined disk counts, I will exhibit Lagrangian Whitney spheres in CP2 which are Hamiltonian non-displaceable from the complex line. This is joint work in progress with G. Dimitroglou Rizell and T. Ekholm.