Timeline for What is a reference for profinite sets?
Current License: CC BY-SA 2.5
17 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 6, 2012 at 15:47 | history | edited | Papiro |
edited tags
|
|
| Jun 27, 2011 at 1:33 | answer | added | Benjamin Steinberg | timeline score: 6 | |
| Jul 4, 2010 at 12:14 | answer | added | David Corwin | timeline score: 3 | |
| Mar 2, 2010 at 23:54 | vote | accept | jackie boy | ||
| Mar 2, 2010 at 23:54 | vote | accept | jackie boy | ||
| Mar 2, 2010 at 23:54 | |||||
| Mar 2, 2010 at 23:54 | vote | accept | jackie boy | ||
| Mar 2, 2010 at 23:54 | |||||
| Mar 2, 2010 at 23:53 | vote | accept | jackie boy | ||
| Mar 2, 2010 at 23:53 | |||||
| Mar 2, 2010 at 23:53 | vote | accept | jackie boy | ||
| Mar 2, 2010 at 23:53 | |||||
| Mar 2, 2010 at 23:53 | vote | accept | jackie boy | ||
| Mar 2, 2010 at 23:53 | |||||
| Mar 2, 2010 at 22:54 | vote | accept | jackie boy | ||
| Mar 2, 2010 at 23:53 | |||||
| Mar 2, 2010 at 22:11 | answer | added | Marty | timeline score: 10 | |
| Mar 2, 2010 at 22:02 | comment | added | jackie boy | The projective limit definition would amount to the same thing. | |
| Mar 2, 2010 at 22:01 | comment | added | jackie boy | Let us first say what a profinite set is. This is a compact Haussdorf totally disconnected topological space. We may form the category of profinite spaces where the morphisms are continuous maps between them. Their is a forgetfull functor from profinite sets to sets that forgets the topology. Profinite completion is the left adjoint to this functor. | |
| Mar 2, 2010 at 21:55 | comment | added | Leonid Positselski | I guess one could define the profinite completion of a set as the projective limit of all finite sets endowed with a (surjective) map from the given set. | |
| Mar 2, 2010 at 21:54 | answer | added | Leonid Positselski | timeline score: 9 | |
| Mar 2, 2010 at 21:33 | comment | added | Qiaochu Yuan | What do you mean by the profinite completion of a set? | |
| Mar 2, 2010 at 20:59 | history | asked | jackie boy | CC BY-SA 2.5 |