# Start a new discussion

## Not signed in

Want to take part in these discussions? Sign in if you have an account, or apply for one below

## Discussion Tag Cloud

Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.

• CommentRowNumber1.
• CommentAuthorMike Shulman
• CommentTimeOct 19th 2010

I split off ∞-connected (∞,1)-topos from locally ∞-connected (∞,1)-topos and added a proof that a locally ∞-connected (∞,1)-topos is ∞-connected iff the left adjoint $\Pi$ preserves the terminal object, just as in the 1-categorical case. I also added a related remark to shape of an (∞,1)-topos saying that when H is locally ∞-connected, its shape is represented by $\Pi(*)$.

I hope that these are correct, but it would be helpful if someone with a little more $\infty$-categorical confidence could make sure I’m not assuming something that doesn’t carry over from the 1-categorical world.

• CommentRowNumber2.
• CommentAuthorUrs
• CommentTimeOct 20th 2010
• (edited Oct 21st 2010)

Thanks, Mike!

This does look correct. For the single possibly nonevident point– that every $\infty$-groupoid is the $(\infty,1)$-colimit over itself of the diagram constant on the point – I have added a link to this proposition.

• CommentRowNumber3.
• CommentAuthorMike Shulman
• CommentTimeOct 21st 2010

Thanks.

• Please log in or leave your comment as a "guest post". If commenting as a "guest", please include your name in the message as a courtesy. Note: only certain categories allow guest posts.
• To produce a hyperlink to an nLab entry, simply put double square brackets around its name, e.g. [[category]]. To use (La)TeX mathematics in your post, make sure Markdown+Itex is selected below and put your mathematics between dollar signs as usual. Only a subset of the usual TeX math commands are accepted: see here for a list.

• (Help)