*[Corrected, thanks – T.]*

There is still one occurrence of $BA^{-1}C$, in the paragraph immediately prior to equation (6).

*[Corrected, thanks – T.]*

the term in (3) now appears as , and I can’t figure out why. Then, equating the linear terms in is said to yield

I don’t understand what happened to the other coefficients of these linear terms, for the right-hand side, and for the left-hand side.

What am I missing?

]]>*[Corrected, thanks – T.]*