Lemma 65.28.11. An open immersion of algebraic spaces is locally of finite presentation.

Proof. An open immersion is by definition representable, hence we can use the general principle Spaces, Lemma 63.5.8 and Morphisms, Lemma 29.21.5. $\square$

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).