20 \def\op{^\mathrm{op}}

    20 \def\op{^\mathrm{op}}

    21 \def\deq{\stackrel{\mathrm{def}}{=}}

    21 \def\deq{\stackrel{\mathrm{def}}{=}}

    22 \def\pd#1#2{\frac{\partial #1}{\partial #2}}

    22 \def\pd#1#2{\frac{\partial #1}{\partial #2}}

    23 \def\lf{\overline{\cC}}

    23 \def\lf{\overline{\cC}}

    24 \def\ot{\otimes}

    24 \def\ot{\otimes}

    25 

    26 

    26 %\def\nn#1{{{\it \small [#1]}}}

    27 %\def\nn#1{{{\it \small [#1]}}}

    27 \def\nn#1{{{\color[rgb]{.2,.5,.6} \small [#1]}}}

    28 \def\nn#1{{{\color[rgb]{.2,.5,.6} \small [#1]}}}

    28 \long\def\noop#1{}

    29 \long\def\noop#1{}

    29 

    30