Definition 42.38.1. Let $(S, \delta )$ be as in Situation 42.7.1. Let $X$ be locally of finite type over $S$. Let $\mathcal{E}$ be a finite locally free sheaf of rank $r$ on $X$. We define, for every integer $k$ and any $0 \leq j \leq r$, an operation

called *intersection with the $j$th Chern class of $\mathcal{E}$*.

Given an integral closed subscheme $i : W \to X$ of $\delta $-dimension $k$ we define

\[ c_ j(\mathcal{E}) \cap [W] = i_*(c_ j({i^*\mathcal{E}}) \cap [W]) \in \mathop{\mathrm{CH}}\nolimits _{k - j}(X) \]where $c_ j({i^*\mathcal{E}}) \cap [W]$ is as defined in Definition 42.37.1.

For a general $k$-cycle $\alpha = \sum n_ i [W_ i]$ we set

\[ c_ j(\mathcal{E}) \cap \alpha = \sum n_ i c_ j(\mathcal{E}) \cap [W_ i] \]

## Comments (0)

There are also: