Timeline for Classification of finite groups of isometries
Current License: CC BY-SA 4.0
18 events
| when toggle format | what | by | license | comment | |
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| Oct 18, 2022 at 12:32 | comment | added | Günter Rote | Recently we have redone the classification of the finite subgroups of $O(4)$, see Towards a geometric understanding of the 4-dimensional point groups, Laith Rastanawi und Günter Rote, arxiv.org/abs/2205.04965 (correcting some mistakes in Conway and Smith). | |
| Jun 26, 2020 at 17:34 | comment | added | Daniel Asimov | No, I think you mean Conway and Smith's book (John H. Conway and Derek A. Smith), "On Quaternions and Octonions". | |
| Nov 11, 2019 at 19:30 | history | edited | Günter Rote | CC BY-SA 4.0 |
correct reference.
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| Nov 11, 2019 at 19:23 | history | edited | Günter Rote | CC BY-SA 4.0 |
corrected dimension of the Hopf fibration
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| Nov 11, 2019 at 19:22 | history | rollback | Günter Rote |
Rollback to Revision 9
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| Nov 11, 2019 at 19:17 | history | edited | Günter Rote | CC BY-SA 4.0 |
corrected dimension of the Hopf fibration
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| Nov 6, 2019 at 10:02 | comment | added | Günter Rote | I meant Conway & Stein's book on quaternions and octonions. | |
| Nov 6, 2019 at 10:00 | history | edited | Günter Rote | CC BY-SA 4.0 |
correct reference.
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| Nov 4, 2019 at 9:26 | comment | added | M. Winter | For example, how can I see that this group is not a subgroup of a symmetry group of a uniform polytope (I say uniform, because this class then contains all the finite reflection groups [also E6, E7 and E8], and also cartesian products). | |
| Nov 4, 2019 at 9:18 | comment | added | M. Winter | I have some trouble tracking down the reference "Conway and Sloan's book, p. 44, Table 4.1". I assumed that this refers to "Sphere Packings, Lattices and Groups", but then page and table number do not give anything useful. I am really interested in understanding the construction of this polytope for $\pm[I\times C_n]$, but I have a hard time verifying the claims. This is also interesting in light of my question about point groups. | |
| Aug 3, 2016 at 16:01 | history | edited | Günter Rote | CC BY-SA 3.0 |
Added a counterexample
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| Feb 1, 2013 at 0:54 | history | edited | Günter Rote | CC BY-SA 3.0 |
corrected link
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| Jan 29, 2013 at 16:55 | history | edited | Günter Rote | CC BY-SA 3.0 |
fixed grammar,
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| Jan 29, 2013 at 16:25 | history | edited | Günter Rote | CC BY-SA 3.0 |
correction about the contents of wikipedia reference
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| Jan 27, 2013 at 21:55 | history | edited | Günter Rote | CC BY-SA 3.0 |
added 381 characters in body
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| Jan 27, 2013 at 17:37 | history | edited | Günter Rote | CC BY-SA 3.0 |
added 180 characters in body
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| Jan 22, 2013 at 20:21 | history | edited | Günter Rote | CC BY-SA 3.0 |
notation changed to O(n)
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| Jan 20, 2013 at 19:55 | history | answered | Günter Rote | CC BY-SA 3.0 |