$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$

## 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Your email address will not be published.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.

## Comments on Example 5.3.4.4

Go back to the page of Example 5.3.4.4.

Comment #1526 by Claudius Heyer on

Comment #1535 by Kerodon on

There are also: