Kerodon

$\Newextarrow{\xRightarrow}{5,5}{0x21D2}$ $\newcommand\empty{}$
$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$

Comments on Remark 1.1.2.5

Go back to the page of Remark 1.1.2.5.

Comment #2014 by XD on

I think we need f to be epimorphism rather than monomorphism for the converse. For example, we just take f to be the inclusion \Delta^{n-1}\to \Delta^n.

Comment #2015 by XD on

Sorry I have made a mistake for the definition of degeneracy, please delete my previous comment.

There are also:

  • 15 comment(s) on Chapter 1: The Language of $\infty $-Categories
  • 9 comment(s) on Section 1.1: Simplicial Sets
  • 2 comment(s) on Subsection 1.1.2: Degeneracy Operators

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Your email address will not be published.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.




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 0013. The letter 'O' is never used.