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1. • CommentRowNumber1.
   • CommentAuthorGoncalo Marques
   • CommentTimeSep 28th 2012
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   Author: Goncalo Marques
   Format: TextI hope this is the right place to ask this question. I seem to remember a page in the nLab, that had a list of lots of different ways to see a category (for instance as a generalized monoid, as a generalized preorder, as a sort of directed space, etc). I'm not able to find that page right now... Does someone know where i can find it? Thanks

   I hope this is the right place to ask this question. I seem to remember a page in the nLab, that had a list of lots of different ways to see a category (for instance as a generalized monoid, as a generalized preorder, as a sort of directed space, etc). I'm not able to find that page right now... Does someone know where i can find it? Thanks
2. • CommentRowNumber2.
   • CommentAuthorUrs
   • CommentTimeSep 28th 2012
   • (edited Sep 28th 2012)
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   Author: Urs
   Format: MarkdownItexI believe you are thinking of an old version of the page _[[category theory]]_. That had a long list like that, which was eventually removed because it was a bit too weird, including also items like "category theory in psychology" and the like. It also just vaguely named these different points of views, so I am not suggesting that we re-install it (actually: I am suggesting not to reinstall it ;-). But of course what is not can easily be made to be here. I have started a list here now * _[category - Definition -- Equivalent definitions](http://ncatlab.org/nlab/show/category#EquivalentDefinitions)_ I could do more, but I leave it at that for the time being. I am sure more people aroud here will add one aspect or other and the list will grow...

   I believe you are thinking of an old version of the page category theory. That had a long list like that, which was eventually removed because it was a bit too weird, including also items like “category theory in psychology” and the like.

   It also just vaguely named these different points of views, so I am not suggesting that we re-install it (actually: I am suggesting not to reinstall it ;-).

   But of course what is not can easily be made to be here. I have started a list here now

   • category - Definition – Equivalent definitions

   I could do more, but I leave it at that for the time being.

   I am sure more people aroud here will add one aspect or other and the list will grow…

3. • CommentRowNumber3.
   • CommentAuthorGoncalo Marques
   • CommentTimeSep 29th 2012
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   Author: Goncalo Marques
   Format: MarkdownItexThank you. I think I found what i wanted here: _[category theory (Rev #180)]( http://ncatlab.org/nlab/revision/category+theory/180)_ . Actually I rather like the different perspectives in the section called "What is category theory?" even thought I don't understand fully all the items.

   Thank you. I think I found what i wanted here: category theory (Rev #180) . Actually I rather like the different perspectives in the section called “What is category theory?” even thought I don’t understand fully all the items.

4. • CommentRowNumber4.
   • CommentAuthorUrs
   • CommentTimeSep 29th 2012
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   Author: Urs
   Format: MarkdownItex> I think I found what i wanted Please Let me know which item you find missing at * [category - Definition – Equivalent definitions](http://ncatlab.org/nlab/show/category#EquivalentDefinitions) .

   I think I found what i wanted

   Please Let me know which item you find missing at

   • category - Definition – Equivalent definitions .