Inanc Baykur (UMass, Amherst): Lefschetz fibrations and symplectic geography

Abstract: We will talk about our recent construction of symplectic Lefschetz fibrations over the 2-sphere with arbitrary signatures and spin type, along with novel applications to the geography of symplectic 4-manifolds and speculations on exotically knotted surfaces in the 4-sphere.
This is joint work with N. Hamada.

For Zoom access please contact Andras Stipsicz (stipsicz.andras[a]renyi.hu).

For more on the seminar, please turn to the web page of the seminar https://www.renyi.hu/~agdt/agdt_seminar/