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2 votes
1 answer
265 views

On intersection theory on toric varieties

Let $\Delta$ be a polytope and consider the projective toric variety $P_{\Delta}.$ Given a curve $C \subset \mathbb{P}_{\Delta},$ which is not toric, is it true that in the Chow group we have $$ C = \...
user535880's user avatar
1 vote
0 answers
80 views

Computing Chow groups of affine, simplicial toric varieties

Let $k$ be an algebraically closed field. Let $X$ be an $n$-dimensional affine, simplicial toric variety over $k$. There exists an $n$-dimensional simplicial cone $\sigma$ in $\mathbb{R}^n$ such that $...
Boris's user avatar
  • 639
2 votes
1 answer
183 views

Intersection in toric variety

In a toric variety $T$ of dimension $11$ I have a subvariety $W$ of which I would like to compute the dimension. On $T$ there is a nef but not ample divisor $D$ whose space of sections has dimension $...
Robert B's user avatar
  • 193
1 vote
1 answer
377 views

Deformation space form the point of view of intersection theory

I'm interested in deformations of subvarieties of a toric variety $X$. Suppose we know a subvariety $V$ in the Chow group of $X$, for example, $V$ is a linear combination of powers of hypersurfaces. ...
Nikita Kalinin's user avatar
4 votes
0 answers
225 views

Intersection numbers on blow ups of toric varieties

Suppose we have a smooth, complete toric varietiy $X_{\Sigma}$ of dimension $n$. Let $\sigma_k \in \Sigma(k)$ a smooth $k$-dimensional cone in $\Sigma$ and suppose we make the toric blow up at the ...
cata's user avatar
  • 357