Revision history [back]
 | 1 | initial version |
For even n=2k, you can take a permutation matrix belonging to k disjoint transpositions like (12)(34)…(n−1,n). This is self-inverse, so in particular similar to its inverse.
| | 1 | initial version |
For even n=2k, you can take a permutation matrix belonging to k disjoint transpositions like (12)(34)…(n−1,n). This is self-inverse, so in particular similar to its inverse.
Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.