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Cohomologically tropical varieties

Kris Shaw
University of Oslo
Séminaire Géométrie et Topologie
mer 13/03/2024 - 11:00 mer 13/03/2024 - 11:45

This talk asks the question: when can the cohomology of a variety be recovered from its tropicalisation? A class of motivating examples come from linear embeddings of complements of hyperplane arrangements into the torus and these examples have played an important role in tropical geometry. We will generalise upon these examples, by proving that a tropicalisation knows the cohomology of the original variety in a strong sense if and only if it satisfies local tropical Poincaré duality and the original variety is so-called “wunderschön”. This talk is based on joint work with Edvard Aksnes, Omid Amini, and Matthieu Piquerez.

Activités à venir

Connection linéaire d'applications de Cherry

Bertuel Tangue Ndawa

University Institute of Technology, University of Ngaoundere

Séminaire Géométrie et Topologie

le 04/02/2026
de 10:00 à 11:00
Monodromie des sl(2,C)-systèmes différentiels holomorphes

Sorin Dumitrescu

Université de Nice

Séminaire Géométrie et Topologie

le 04/02/2026
de 11:00 à 12:00

Partenaires

  • Nantes Université
  • CNRS
  • LMJL
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