Oberseminar: Vsevolod Shevchishin (D.13.15)
Recently Borman-Li-Wu gave an example of two Lagrangian embeddings of RP^2 in the 9-fold blow-up of CP^2 which have the same Z_2-homology class but are not isotopic to each other even smoothly. In this talk, I present a classification of isotopy classes of Lagrangian embeddings of RP^2 in rational symplectic 4-manifolds based on the technique of symplectic neck stretching.
