Symplectic structures at radius 0 associated with degenerations and their applications

• Javier Bobadilla

Room: KE D-302

Tropical degenerations and stable rationality

• John Ottem (Oslo)

Room: KE D-302

Cohomologically tropical varieties

• Kris Shaw

Room: KE D-302 The cohomology of the complement of a hyperplane arrangement can be recovered from its tropicalisation. This talk asks what which other subvarieties of the torus does this hold. We show that the tropicalisation knows the cohomology of the variety in a strong sense if and only if it satisfies local tropical Poincaré duality and the original variety is what we call wunderschön. Following the work of Itenberg, Katzarkov, Mikhalkin, and Zharkov, we have that tropicalisations of families of varieties which locally satisfy these two conditions recover information about the mixed Hodge structures of the family. This is joint work with Edvard Aksnes, Omid Amini, and Matthieu Piquerez

Non-reductive geometry in the daylight

• David Rydh

Room: KE D-302

Gromov-Witten theory of the Enriques surface

• Georg Oberdieck

Room: KE D-302

Towards homological mirror symmetry

• Vivek Shende

Room: AR Ø-110 Survey of my ongoing work with Benjamin Gammage.

Twisted FM partners of ordinary K3 surfaces

• Sofia Tirabassi

Room: AR Ø-110

How to make log structures

• Alessio Corti

Room: KE E-101

Polynomial invariants for full exceptional sequences

• Lutz Hille

Room: KE E-101

Some derived equivalent hyperkahler fourfolds of Picard number 1

• Michal Kapustka

Room: AR G-001

Cohomological rank functions on abelian surfaces via Bridgeland stability

• Martí Lahoz

Room: AR G-001