Lefschetz (1,1)-theorem in tropical geometry

Autor: Philipp Jell, Johannes Rau, Kristin Shaw
Jazyk: English<br />French
Rok vydání: 2018
Předmět:
Zdroj: Épijournal de Géométrie Algébrique, Vol Volume 2 (2018)
Druh dokumentu: article
ISSN: 2491-6765
DOI: 10.46298/epiga.2018.volume2.4126
Popis: For a tropical manifold of dimension n we show that the tropical homology classes of degree (n-1, n-1) which arise as fundamental classes of tropical cycles are precisely those in the kernel of the eigenwave map. To prove this we establish a tropical version of the Lefschetz (1, 1)-theorem for rational polyhedral spaces that relates tropical line bundles to the kernel of the wave homomorphism on cohomology. Our result for tropical manifolds then follows by combining this with Poincar\'e duality for integral tropical homology.
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