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1. • CommentRowNumber1.
   • CommentAuthornLab edit announcer
   • CommentTimeNov 15th 2021
   • PermaLink
   Author: nLab edit announcer
   Format: MarkdownItex$A\times B$ is not the coproduct of $A$ and $B$ in Rel. Anonymous <a href="https://ncatlab.org/nlab/revision/diff/SEAR/56">diff</a>, <a href="https://ncatlab.org/nlab/revision/SEAR/56">v56</a>, <a href="https://ncatlab.org/nlab/show/SEAR">current</a>

   $A\times B$ is not the coproduct of $A$ and $B$ in Rel.

   Anonymous

   diff, v56, current

2. • CommentRowNumber2.
   • CommentAuthorGuest
   • CommentTimeNov 15th 2021
   • PermaLink
   Author: Guest
   Format: MarkdownItex(That edit was because of this thread: [How can the Cartesian product serve as the coproduct in Rel in SEAR](https://nforum.ncatlab.org/discussion/13685/how-can-the-cartesian-product-serve-as-the-coproduct-in-rel-in-sear/).)

   (That edit was because of this thread: How can the Cartesian product serve as the coproduct in Rel in SEAR.)

3. • CommentRowNumber3.
   • CommentAuthorGuest
   • CommentTimeApr 18th 2022
   • PermaLink
   Author: Guest
   Format: TextAre there any sources for SEAR in the existing mathematical literature, or is this all original research?

   Are there any sources for SEAR in the existing mathematical literature, or is this all original research?
4. • CommentRowNumber4.
   • CommentAuthorDavidRoberts
   • CommentTimeApr 19th 2022
   • PermaLink
   Author: DavidRoberts
   Format: MarkdownItexThis is all Mike's original research, and as far as I know, the nLab is the only place this appears in detail (I believe it may be cited/referred to in various places).

   This is all Mike’s original research, and as far as I know, the nLab is the only place this appears in detail (I believe it may be cited/referred to in various places).

5. • CommentRowNumber5.
   • CommentAuthorGuest
   • CommentTimeApr 19th 2022
   • PermaLink
   Author: Guest
   Format: Textwell, I guess it's up for somebody else to publish in formal journals an "Elementary Theory of the Bicategory of Relations Between Sets"

   well, I guess it's up for somebody else to publish in formal journals an "Elementary Theory of the Bicategory of Relations Between Sets"
6. • CommentRowNumber6.
   • CommentAuthorHurkyl
   • CommentTimeApr 19th 2022
   • (edited Apr 19th 2022)
   • PermaLink
   Author: Hurkyl
   Format: MarkdownItexSelf-deleted. (re: the notion of [[allegory]] is just 'sets and relations', without the E part)

   Self-deleted. (re: the notion of allegory is just ’sets and relations’, without the E part)

7. • CommentRowNumber7.
   • CommentAuthornLab edit announcer
   • CommentTimeJun 7th 2022
   • PermaLink
   Author: nLab edit announcer
   Format: MarkdownItexadding section about models of SEAR. Anonymous <a href="https://ncatlab.org/nlab/revision/diff/SEAR/60">diff</a>, <a href="https://ncatlab.org/nlab/revision/SEAR/60">v60</a>, <a href="https://ncatlab.org/nlab/show/SEAR">current</a>

   adding section about models of SEAR.

   Anonymous

   diff, v60, current

8. • CommentRowNumber8.
   • CommentAuthornLab edit announcer
   • CommentTimeNov 17th 2022
   • PermaLink
   Author: nLab edit announcer
   Format: MarkdownItexadded section on three-sorted SEAR, in making alternate primitive choices Anonymous <a href="https://ncatlab.org/nlab/revision/diff/SEAR/62">diff</a>, <a href="https://ncatlab.org/nlab/revision/SEAR/62">v62</a>, <a href="https://ncatlab.org/nlab/show/SEAR">current</a>

   added section on three-sorted SEAR, in making alternate primitive choices

   Anonymous

   diff, v62, current