Abstract for the talk on 20.02.2019 (14:00 h)

Seminar on Nonlinear Algebra

Adam Czapliński (Universität Siegen)
Lagrangian Fibrations with designed singular fibres

In this talk, we study Lagrangian Fibrations with designed singular fibers. The idea is to construct a K3 surface X as a minimal resolution of the singularities of a double cover Y of the plane branched along a reduced but possibly reducible singular sextic Σ. Moreover, we assume that Σ has at worst A-D-E singularities. This freeness of choosing Σ allows us to construct many examples of singular fibres with various singularities. We find an explicit description of the singular fibers of the Lagrangian Fibrations f : MX(0,2H,χ) →|2H|. The results shed also some light on the correlation between the degree of the discriminant divisor Δ and the topology of the corresponding moduli space.


22.02.2019, 02:30