labtex.sty

\ProvidesPackage{labtex}

\RequirePackage{amsmath,amsfonts,amssymb}

%-----------------------------------------------------
% new commands
\newcommand{\bbar}[1]{\ensuremath{\bar{\bar{#1}}}}
\newcommand{\p}[1][]{\ensuremath{\partial_{#1}}}
\newcommand{\partl}[2]{\ensuremath{\frac{\partial #1}{\partial #2}}}
\newcommand{\tpartl}[2]{\ensuremath{\tfrac{\partial #1}{\partial #2}}}
\newcommand{\derv}[2]{\ensuremath{\frac{d #1}{d #2}}}
\newcommand{\tderv}[2]{\ensuremath{\tfrac{d #1}{d #2}}}

\newcommand{\norm}[1]{\ensuremath{\left\|#1\right\|}} % a norm
\newcommand{\inner}[2]{\ensuremath{\left< #1, #2 \right>}} % an inner product
\newcommand{\argmin}[1]{\ensuremath{\underset{#1}{\operatorname{arg\,min}}}}
\newcommand{\argmax}[1]{\ensuremath{\underset{#1}{\operatorname{arg\,max}}}}

\newcommand{\bbold}[1]{\ensuremath{\mathbb{#1}}}

\providecommand{\e}[1]{\ensuremath{\times 10^{#1}}} %% scientific
\providecommand{\abs}[1]{\left| #1 \right|} %% absolute value
%% \providecommand{\tr}[1]{\ensuremath{#1 ^{\mathrm{\scriptscriptstyle T}}}}


%% math operators:
\DeclareMathOperator{\spn}{span}        %% span
\DeclareMathOperator{\nspace}{null}       %% nullspace
\DeclareMathOperator{\diag}{diag}       %% diag
\DeclareMathOperator{\sgn}{sgn}         %% signum
\DeclareMathOperator{\rank}{rank}       %% rank
\DeclareMathOperator{\orth}{orth}       %% orthogonal
\DeclareMathOperator{\Tr}{Tr}           %% trace
\DeclareMathOperator{\im}{Im}           %% imaginary
\DeclareMathOperator{\supp}{sup}        %% supremum
\DeclareMathOperator{\inff}{inf}        %% infimum


%% constants
\newcommand{\reals}{\bbold{R}} %% reals
\newcommand{\inertia}{\mathbb{I}}               %% intertia tensor
\newcommand{\ccos}{\text{c}}                    %% cos abbreviation
\newcommand{\ssin}{\text{s}}                    %% sin abbreviation
\newcommand{\ep}{\ensuremath{\varepsilon}}
\newcommand{\degree}{\ensuremath{^\circ}}   
\newcommand{\tr}{\ensuremath{^\mathrm{\scriptscriptstyle T}}}  

%----------------------------
% theorem environments
\newtheorem{theorem}{Theorem}
\newtheorem{lemma}{Lemma}
\newtheorem{principle}{Principle}
\newtheorem{example}{Example}

%----------------------------
% common font macros
\def\D{\ensuremath{\textrm{D}}}
\DeclareMathAlphabet{\mathpzc}{OT1}{pzc}{m}{it}        
\DeclareMathAlphabet{\mathtst}{OMS}{cmsy}{m}{n}