AbstractIn this talk, I will consider isomorphisms of Bergman fans of matroids. Motivated by algebraic geometry, these isomorphisms can be considered as matroid analogs of birational maps. I will introduce Cremona automorphisms of the coarsest fan structure. These produce a class of automorphisms which do not come from automorphisms of the underlying matroid. I will then explain that the automo...
Birational Geometry WorkshopThis workshop is devoted to an in-depth study of the recent work "Singularities on Fano fibrations and beyond" by Caucher Birkar. This work establishes several fundamental problems in birational geometry. 28 June 11:00-12:00Caucher BirkarIntroduction14:00-15:00Roberto SvaldiToroidal geometry and toroidalisation of fibrations (Online) (sections 3,4)15:30-16:30Chen Jia...