Timeline for The category of posets
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
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| Apr 13, 2017 at 12:19 | history | edited | CommunityBot |
replaced http://math.stackexchange.com/ with https://math.stackexchange.com/
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| Oct 15, 2015 at 21:08 | history | edited | John Baez | CC BY-SA 3.0 |
fixed latex superscripts and subscripts
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| Sep 29, 2012 at 15:55 | vote | accept | Gejza Jenča | ||
| May 8, 2012 at 15:41 | comment | added | Martin Brandenburg | There are lots of reasons showing up in "practice", for example when dealing with simplicial objects. Then $0 \leq 1$, you want to have a map $X_0 \to X_1$, and not vice versa. [But of course this is just notation] | |
| May 8, 2012 at 13:17 | comment | added | Camilo Sarmiento | Sorry, this may be ordinary categorical folklore, but could you mention briefly why or whether it is more natural to view x<=y in the preorder as an arrow x->y in the category? (i.e. as opposed to the opposite direction :P ) | |
| Mar 17, 2012 at 9:22 | comment | added | Gejza Jenča | The sole purpose of this comment is to contain the word "quasiorder" (an alternative name for preorders) -- greetings to the all-seeing eye of google. | |
| Mar 16, 2012 at 22:05 | history | edited | Martin Brandenburg | CC BY-SA 3.0 |
added 360 characters in body
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| Mar 16, 2012 at 17:41 | comment | added | Tom Leinster | @Martin: morally, I don't think you've made an error. If the OP wants to learn this stuff, one of the things they should spend time understanding is why it's OK to treat posets and preorders as essentially the same thing. | |
| Mar 16, 2012 at 17:32 | history | edited | Martin Brandenburg | CC BY-SA 3.0 |
added 140 characters in body; deleted 1 characters in body; added 318 characters in body
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| Mar 16, 2012 at 17:24 | comment | added | Camilo Sarmiento | @Martin: Could you include references to this, if any? | |
| Mar 16, 2012 at 17:24 | comment | added | Martin Brandenburg | Though I think I've made the same error as P. May: My answer talks about preorders. Sorry about that ... | |
| Mar 16, 2012 at 17:06 | history | answered | Martin Brandenburg | CC BY-SA 3.0 |