2019/2020
2020 March 3rd
Wlodzimierz Jelonek
Title: Generalized Calabi type Kahler surfaces
Abstract: In the talk we give the classification of generalized Calabi type Kähler surfaces, the class of QCH Kähler surfaces whose opposite almost Hermitian structure is Hermitian and is determined by complex foliation by curves.
2020 January 28th
Stanislaw Janeczko
Title: Singularities of Lagrangian projections - symmetric caustics II
2020 January 21th
Stanislaw Janeczko
Title: Singularities of Lagrangian projections - symmetric caustics
2020 January 14th
Stanislaw Janeczko
Title: Singularities of Lagrangian projections - caustics
2020 January 7th
Yingying Zhang (Tsinghua University, Beijing)
Title: Obstructions to the existence of coupled Kähler-Einstein metrics
Abstract: Coupled Kähler-Einstein metric was introduced by Hultgren and Witt-Nystrom. It is a new type canonical metric generalizing Kähler-Einstein metrics or Kähler Ricci solitons on compact Kahler manifolds. In this talk, we will discuss two obstructions to the existence of the coupled Kähler-Einstein metrics. One is the Matsushima type obstruction, which is about the reductivity of the Lie algebra of automorphism. Another is an extension of original Futaki invariant. We will also discuss the localization formula of this generalized Futaki invariant and use it to verify the existence of coupled Kähler-Einstein metric on an example. (This is the joint work with Professor Akito Futaki.)
2019 November 26th
Shyuichi Izumiya
Title: Pedals, primitives and inversions of plane curves
2019 November 19th
Stanisław Janeczko
Title: Singularities of Lagrangian projections - applications
2019 November 12th
Stanisław Janeczko
Title: Singularities of Lagrangian projections - continuation
2019 November 5th
Stanisław Janeczko
Title: Singularities of Lagrangian projections - introduction