RE: Math manuals uncompilable under rc2

[Vincent van Ravesteijn - TNW]

I have basically no problems compiling the Math-manual, until I tried a
machine without the braket package. I think we could remove the first
two (quite German sounding) lines below from the preamble.

% used in Kap. 22.4
\usepackage{braket}
...
% needed in sec. 22.4
% check for package braket
\newboolean{braket}
\IfFileExists{braket.sty}
 {\usepackage{braket}
  \setboolean{braket}{true}}
 {\setboolean{braket}{false}}

Vincent