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arxiv: 1001.4784 · v3 · submitted 2010-01-26 · 🧮 math.AG · math.CO

Tropical cycles and Chow polytopes

classification 🧮 math.AG math.CO
keywords chowpolytopetropicalvarietytoricabstractalgebraicambient
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The Chow polytope of an algebraic cycle in a torus depends only on its tropicalisation. Generalising this, we associate a Chow polytope to any abstract tropical variety in a tropicalised toric variety. Several significant polyhedra associated to tropical varieties are special cases of our Chow polytope. The Chow polytope of a tropical variety $X$ is given by a simple combinatorial construction: its normal subdivision is the Minkowski sum of $X$ and a reflected skeleton of the fan of the ambient toric variety.

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