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1. • CommentRowNumber1.
   • CommentAuthornLab edit announcer
   • CommentTimeJun 3rd 2022
   • PermaLink
   Author: nLab edit announcer
   Format: MarkdownItexPage created, but author did not leave any comments. Anonymous <a href="https://ncatlab.org/nlab/revision/cotopos/1">v1</a>, <a href="https://ncatlab.org/nlab/show/cotopos">current</a>

   Page created, but author did not leave any comments.

   Anonymous

   v1, current

2. • CommentRowNumber2.
   • CommentAuthorDavid_Corfield
   • CommentTimeJun 3rd 2022
   • PermaLink
   Author: David_Corfield
   Format: MarkdownItexSome references were mentioned in [this discussion](https://nforum.ncatlab.org/discussion/3193/cotopos/). We have that duals of toposes are [[protomodular categories]].

   Some references were mentioned in this discussion.

   We have that duals of toposes are protomodular categories.

3. • CommentRowNumber3.
   • CommentAuthorGuest
   • CommentTimeJun 3rd 2022
   • PermaLink
   Author: Guest
   Format: MarkdownItexThe links to the references don't seem to exist anymore.

   The links to the references don’t seem to exist anymore.

4. • CommentRowNumber4.
   • CommentAuthorGuest
   • CommentTimeJun 3rd 2022
   • PermaLink
   Author: Guest
   Format: MarkdownItexThe web archive has archived the second reference [here](https://web.archive.org/web/20130602214748/http://www.wra1th.plus.com/gcw/rants/math/PSSL/1997.html).

   The web archive has archived the second reference here.

5. • CommentRowNumber5.
   • CommentAuthorUrs
   • CommentTimeJun 4th 2022
   • (edited Jun 4th 2022)
   • PermaLink
   Author: Urs
   Format: MarkdownItexI have fixed the first sentence from: > The [[dual]] of a [[topos]]. to: > The notion of *cotopos* is [[abstract duality|dual]] to that of a [[topos]]. and the link from *[[dual]]* to *[[abstract duality]]*. <a href="https://ncatlab.org/nlab/revision/diff/cotopos/2">diff</a>, <a href="https://ncatlab.org/nlab/revision/cotopos/2">v2</a>, <a href="https://ncatlab.org/nlab/show/cotopos">current</a>

   I have fixed the first sentence from:

   The dual of a topos.

   to:

   The notion of cotopos is dual to that of a topos.

   and the link from dual to abstract duality.

   diff, v2, current