Dear Morphism, and dear all,
thinking more on the above, I have two questions:
1. Doers there exist an AKA decompostion? (where A and K take the same meaning as in the KAK decomposition)
2. I am very interested in the Bruhat decomposition. Can anyone recommend a good reference for that?
For some reason, the matrix equations do not appear any more on the blog's page. Is anyone experiencing the same problem?