144 \newcommand{\compose}{\circ}

   144 \newcommand{\compose}{\circ}

   145 \newcommand{\eset}{\emptyset}

   145 \newcommand{\eset}{\emptyset}

   146 

   146 

   147 \newcommand{\Set}{\text{\textbf{Set}}}

   147 \newcommand{\Set}{\text{\textbf{Set}}}

   148 \newcommand{\Vect}{\text{\textbf{Vect}}}

   148 \newcommand{\Vect}{\text{\textbf{Vect}}}

   149 \newcommand{\Cat}{\mathcal{C}}

   150 \newcommand{\Cat}{\mathcal{C}}

   150 

   151 

   151 \newcommand{\psmallmatrix}[1]{\left(\begin{smallmatrix} #1 \end{smallmatrix}\right)}

   152 \newcommand{\psmallmatrix}[1]{\left(\begin{smallmatrix} #1 \end{smallmatrix}\right)}

   152 

   153 

   153 \newcommand{\qiq}[2]{[#1]_{#2}}

   154 \newcommand{\qiq}[2]{[#1]_{#2}}