Timeline for Automorphisms of $SL_n(\mathbb{Z})$
Current License: CC BY-SA 2.5
6 events
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| Mar 3, 2011 at 21:23 | comment | added | Keivan Karai | @Jim Humphreys: I totally agree, and that's why I started with "a possible approach". I would be quite pleased to see the ideas behind other methods, which are perhaps more suitable for this problem. | |
| Mar 3, 2011 at 19:50 | comment | added | Jim Humphreys | In the broader setting of discrete subgroups of Lie groups including arithmetic groups, the methods of Margulis are extremely powerful. But not so much theory is needed to compute the automorphisms of some familiar linear groups. | |
| Mar 3, 2011 at 12:38 | history | edited | Keivan Karai | CC BY-SA 2.5 |
added 25 characters in body
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| Mar 3, 2011 at 12:34 | comment | added | Guntram | You forgot about diagonal automorphisms of $SL_n(\mathbf R)$, i.e. those which are induced by conjugating with a diagonal matrix in $GL_n(\mathbf R)$. | |
| Mar 3, 2011 at 12:28 | history | edited | Benoît Kloeckner | CC BY-SA 2.5 |
corrected an X into Z
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| Mar 3, 2011 at 11:23 | history | answered | Keivan Karai | CC BY-SA 2.5 |