Skip to main content
10 events
when toggle format what by license comment
Apr 3, 2019 at 22:17 history edited Benen Harrington CC BY-SA 4.0
deleted 1 character in body
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
added 12 characters in body
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
added 99 characters in body
Apr 3, 2019 at 9:48 history edited Benen Harrington CC BY-SA 4.0
deleted 8 characters in body
Apr 3, 2019 at 9:37 history edited Benen Harrington CC BY-SA 4.0
added 105 characters in body
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