The Stacks project

Over any ringed space, sheaves of modules of finite type have closed support.

Lemma 17.9.6. Let $(X, \mathcal{O}_ X)$ be a ringed space. Let $\mathcal{F}$ be a sheaf of $\mathcal{O}_ X$-modules. If $\mathcal{F}$ is of finite type then support of $\mathcal{F}$ is closed.

Proof. This is a reformulation of Lemma 17.9.5. $\square$

Comments (1)

Comment #889 by on

Suggested slogan: Over any ringed space, sheaves of modules of finite type have closed support.

There are also:

  • 2 comment(s) on Section 17.9: Modules of finite type

Post a comment

Your email address will not be published.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.




In order to prevent bots from posting comments, we would like you to prove that you are human. You can do this by filling in the name of the current tag in the following input field. As a reminder, this is tag 01BA. Beware of the difference between the letter 'O' and the digit '0'.



View Lemma 17.9.6 as pdf