Conjecture on Poincaré duality and ring structures for tropical varieties
Conjecture on Poincaré duality and ring structures for tropical varieties
Let be a tropical variety. Write for its large cohomology, for its large homology, and let
be the Poincaré duality map. A tropical variety is regularizable in codimension 1 when it has the regularizability property in codimension , and it is irreducible in the usual tropical sense. For a regularizable, irreducible , let denote the ring structure on induced by the product on , and let denote the ring structure induced by the ambient space when is diagonalizable.
Poincaré duality and ring-structure conjecture. The map is surjective for every tropical variety . If is regularizable in codimension and irreducible, then its kernel is an ideal, is diagonalizable, and the induced ring structures and on coincide.
The conjecture packages expected compatibility between large tropical cohomology, large tropical homology, and the ambient intersection product. The source gives no resolution status for these assertions; in particular, the claims remain open here.
Sources & referencesView supporting material
Primary source
Alexander Esterov, “Tropical varieties with polynomial weights and corner loci of piecewise polynomials”, arXiv:1012.5800 (2011).
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