Timeline for Is the Perron-Frobenius dimension of a G-Set given by its cardinality?
Current License: CC BY-SA 4.0
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Apr 3, 2019 at 22:17 | history | edited | Benen Harrington | CC BY-SA 4.0 |
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Apr 3, 2019 at 20:15 | comment | added | Frieder Ladisch | @PhilTosteson: fair enough! Sorry I overlooked this. | |
Apr 3, 2019 at 15:17 | comment | added | Phil Tosteson | I agree this is a much more satisfying answer. I did identify/use that eigenvector though. | |
Apr 3, 2019 at 14:49 | history | edited | Benen Harrington | CC BY-SA 4.0 |
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Apr 3, 2019 at 13:53 | comment | added | Frieder Ladisch | The diagonal element corresponding to $K$ is exactly the number of cosets in $G/H$ that are fixed by $K$. I think this answer is better than the other one since it makes explicit the common Perron-Frobenius eigenvector for all the $e_H$'s, namely $e_{\{1\}}$. For nontrivial subgroups $K$, the corresponding eigenvector is not $e_K$, but can be computed by Möbius inversion, this has been done by David Gluck (1981, Illinois J. Math. 25, no.1, pp.63-67). | |
Apr 3, 2019 at 11:00 | history | edited | Benen Harrington | CC BY-SA 4.0 |
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Apr 3, 2019 at 9:48 | history | edited | Benen Harrington | CC BY-SA 4.0 |
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Apr 3, 2019 at 9:37 | history | edited | Benen Harrington | CC BY-SA 4.0 |
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Apr 3, 2019 at 9:30 | review | First posts | |||
Apr 3, 2019 at 9:51 | |||||
Apr 3, 2019 at 9:29 | history | answered | Benen Harrington | CC BY-SA 4.0 |