Timeline for Injective maps and direct limits [closed]
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 16, 2020 at 13:17 | history | closed |
YCor Jeremy Rickard user44191 ARG David Handelman |
Needs details or clarity | |
| May 15, 2020 at 15:09 | comment | added | YCor | @LSpice yes, but in this precise case it doesn't apply, as the question makes sense only for maps in the sense "functions between sets" and hasn't seriously thought about what the right setting for the question is. (I should add that the fact that people use "map" for arrows in arbitrary categories might be misleading to students/beginners, as reflected by this very question.) | |
| May 15, 2020 at 14:46 | comment | added | LSpice | @YCor, I understand the question about 'injective', but surely it is just a matter of taste whether to refer to arrows, maps, or morphisms in a category. (After all, I've only ever seen $\operatorname{Mor}(C, C')$, never $\operatorname{Arr}(C, C')$.) | |
| May 15, 2020 at 13:28 | answer | added | Andrea Ferretti | timeline score: 2 | |
| May 15, 2020 at 13:27 | answer | added | Maxime Ramzi | timeline score: 2 | |
| May 15, 2020 at 12:40 | history | edited | David White | CC BY-SA 4.0 |
Fixed typo to this new question
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| May 15, 2020 at 12:40 | answer | added | David White | timeline score: 1 | |
| May 15, 2020 at 8:32 | review | Close votes | |||
| May 16, 2020 at 13:17 | |||||
| May 15, 2020 at 8:11 | comment | added | Jokubas Rahman | Okay let me be more specific. I am actually considering categories like Sets, Semigroups, etc. where injective makes sense. | |
| May 15, 2020 at 8:03 | review | First posts | |||
| May 15, 2020 at 9:46 | |||||
| May 15, 2020 at 8:03 | comment | added | YCor | What does it mean that an arrow is "injective"? why do you call arrow "maps"? | |
| May 15, 2020 at 7:57 | history | asked | Jokubas Rahman | CC BY-SA 4.0 |