Loading [MathJax]/extensions/tex2jax.js

The Stacks project

Lemma 38.16.7. Let $i : Z \to X$ be a closed immersion of schemes of finite type over a scheme $S$. Let $s \in S$. Let $\mathcal{F}$ be a finite type, quasi-coherent sheaf on $Z$. Then $\mathcal{F}$ is (universally) pure along $Z_ s$ if and only if $i_*\mathcal{F}$ is (universally) pure along $X_ s$.

Proof. This follows from Divisors, Lemma 31.8.3. $\square$


Comments (0)


Your email address will not be published. Required fields are marked.

In your comment you can use Markdown and LaTeX style mathematics (enclose it like $\pi$). A preview option is available if you wish to see how it works out (just click on the eye in the toolbar).

Unfortunately JavaScript is disabled in your browser, so the comment preview function will not work.

All contributions are licensed under the GNU Free Documentation License.