Timeline for How do I stop worrying about root systems and decomposition theorems (for reductive groups)?
Current License: CC BY-SA 3.0
18 events
| when toggle format | what | by | license | comment | |
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| Nov 8, 2013 at 17:39 | comment | added | Paul Siegel | I used to have the same attitude about root systems and such - I learned at one point about the correspondence between root systems and lie algebras and sort of believed that root systems could be classified in a nice way, but I couldn't really see the forest for the trees. I'm still not at all an expert, but what really made the theory "click" for me was working it out explicitly for $SU(2)$ and $SO(3)$. Everything feels very natural for those two examples, and the general theory really isn't all that much harder. | |
| Nov 8, 2013 at 15:38 | history | edited | Ricardo Andrade | CC BY-SA 3.0 |
replaced deprecated tag 'geometry', since question was bumped to the front page; I am not sure 'ag.algebraic-geometry' is the best tag to replace 'geometry'; please feel free to replace it with something better
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| Nov 8, 2013 at 13:17 | comment | added | Lee Mosher | I suggest viewing Kubrick's movie "Dr. Strangelove: How I learned to stop worrying and love the bomb". | |
| Nov 20, 2010 at 19:36 | comment | added | Jim Humphreys | Now at least I can stop "worring" about that strange word in the header and go back to real worrying about the mathematics ;-) | |
| Nov 20, 2010 at 19:36 | history | edited | Jim Humphreys | CC BY-SA 2.5 |
edited title
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| Oct 21, 2010 at 4:27 | answer | added | Hugh Thomas | timeline score: 3 | |
| Oct 21, 2010 at 2:59 | comment | added | Angelo | Wasn't it Von Neumann who said that in mathematics you don't understand things, you just get used to them? | |
| Oct 21, 2010 at 2:46 | answer | added | Theo Johnson-Freyd | timeline score: 12 | |
| Oct 21, 2010 at 2:21 | answer | added | Charles Siegel | timeline score: 2 | |
| Oct 21, 2010 at 2:06 | answer | added | Will Jagy | timeline score: 2 | |
| Oct 21, 2010 at 2:05 | comment | added | root | @Theo. Thanks, I didn't know any markdowns... | |
| Oct 21, 2010 at 2:03 | comment | added | Theo Johnson-Freyd |
(For future reference, you can get boldface by using double asterisks or double underscores: __LAG__ gives LAG and **LAG** gives LAG. No need to use TeX, which requires the reader's browser be configured correctly (it usually is) --- Markdown runs on the server, and hence is faster.)
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| Oct 21, 2010 at 0:36 | comment | added | root | @Kevin. Can you point out which specific note is most useful for this question? Thank you! | |
| Oct 21, 2010 at 0:33 | answer | added | Timothy Chow | timeline score: 2 | |
| Oct 21, 2010 at 0:00 | comment | added | Kevin H. Lin | I have found Peter Woit's exposition of this material in these notes to be quite good: math.columbia.edu/%7Ewoit/repthy.html | |
| Oct 20, 2010 at 23:49 | comment | added | Charles Rezk | Dynkin diagrams and their friends show up all over the place in weird spooky ways. Go look up the [ADE classification]. | |
| Oct 20, 2010 at 23:34 | answer | added | David Hill | timeline score: 2 | |
| Oct 20, 2010 at 20:48 | history | asked | root | CC BY-SA 2.5 |