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\ProvidesPackage{abmath}[2006/04/12]
\RequirePackage{maybemath}
\RequirePackage{braket}
\RequirePackage{xspace}

%% --------------------------------------------------------------

\DeclareRobustCommand{\mymath}[1]{\ensuremath{\maybebmsf{#1}}}
\DeclareRobustCommand{\MathUpright}[1]{\mymath{\mathrm{#1}}}
\DeclareRobustCommand{\MathText}[1]{\ensuremath{\text{#1}}}
\DeclareRobustCommand{\RHS}{\MathText{right hand side}\xspace}
\DeclareRobustCommand{\LHS}{\MathText{left hand side}\xspace}

%% Groupings
\DeclareRobustCommand{\parenths}[1]{\mymath{\left({#1}\right)}}
\DeclareRobustCommand{\braces}[1]{\mymath{\left\{{#1}\right\}}}
\DeclareRobustCommand{\angles}[1]{\mymath{\left\langle{#1}\right\rangle}}
\DeclareRobustCommand{\sqbracs}[1]{\mymath{\left[{#1}\right]}}
\DeclareRobustCommand{\mods}[1]{\mymath{\left\lvert{#1}\right\rvert}}
\DeclareRobustCommand{\modsq}[1]{\mymath{\mods{#1}^2}}
\DeclareRobustCommand{\dblmods}[1]{\mymath{\left\lVert{#1}\right\rVert}}
% legacy names
\DeclareRobustCommand{\bigparenths}[1]{\parenths{#1}}
\DeclareRobustCommand{\bigbraces}[1]{\braces{#1}}
\DeclareRobustCommand{\bigangles}[1]{\angles{#1}}
\DeclareRobustCommand{\bigsqbracs}[1]{\sqbracs{#1}}
\DeclareRobustCommand{\bigmods}[1]{\mods{#1}}
\DeclareRobustCommand{\bigmodsq}[1]{\modsq{#1}}
\DeclareRobustCommand{\bigdblmods}[1]{\dblmods{#1}}

%% Misc
\DeclareMathOperator{\diag}{diag}
\DeclareMathOperator{\sign}{sgn}
\DeclareMathOperator{\li}{li}
\DeclareMathOperator{\trace}{Tr}
\DeclareRobustCommand{\expparenths}[1]{\mymath{\exp{\!\parenths{#1}}}}
\DeclareRobustCommand{\expbraces}[1]{\mymath{\exp{\!\braces{#1}}}}
\DeclareRobustCommand{\expOf}[1]{\expparenths{#1}} % generalise to have braces specifier 1st arg
\DeclareRobustCommand{\eexp}[1]{\mymath{e^{#1}}}
\DeclareRobustCommand{\plusquad}{\mymath{\oplus}}
\DeclareRobustCommand{\logOf}[1]{\log\!\parenths{#1}}
\DeclareRobustCommand{\lnOf}[1]{\ln\!\parenths{#1}}
\DeclareRobustCommand{\liOf}[1]{\li\!\parenths{#1}}
\DeclareRobustCommand{\signOf}[1]{\sign\!\parenths{#1}}
\DeclareRobustCommand{\diagOf}[1]{\diag\!\parenths{#1}}
\DeclareRobustCommand{\traceOf}[1]{\trace\!\parenths{#1}}

%% For use outside math mode
\let\@oldpm\pm
\DeclareRobustCommand{\pm}{\mymath{\,\@oldpm\,}}
\let\@oldmp\mp
\DeclareRobustCommand{\mp}{\mymath{\,\@oldmp\,}}
\let\@oldVert\vert
\DeclareRobustCommand{\vert}{\mymath{\@oldVert\,}}
\let\@oldTo\to
\DeclareRobustCommand{\to}{\mymath{\,\@oldTo\,}}
\let\@oldsim\sim
\DeclareRobustCommand{\sim}{\mymath{\,\@oldsim\,}}
\let\@oldimplies\implies
\DeclareRobustCommand{\implies}{\mymath{\@oldimplies}}
\DeclareRobustCommand{\To}{\mymath{\@oldimplies}}
\let\@oldtimes\times
\DeclareRobustCommand{\times}{\mymath{\,\@oldtimes\,}}
\let\@oldbra\bra
\DeclareRobustCommand{\bra}[1]{\mymath{\@oldbra{#1}}}
\let\@oldket\ket
\DeclareRobustCommand{\ket}[1]{\mymath{\@oldket{#1}}}
\let\@oldbraket\braket
\DeclareRobustCommand{\braket}[1]{\mymath{\@oldbraket{#1}}}

%% Re-define Greek letters for use outside math mode, too
\let\@Oldalpha\alpha%
\let\@Oldbeta\beta%
\let\@Oldgamma\gamma%
\let\@Olddelta\delta%
\let\@Oldepsilon\epsilon%
\let\@Oldvarepsilon\varepsilon%
\let\@Oldzeta\zeta%
\let\@Oldeta\eta%
\let\@Oldtheta\theta%
\let\@Oldvartheta\vartheta%
\let\@Oldiota\iota%
\let\@Oldkappa\kappa%
\let\@Oldlambda\lambda%
\let\@Oldmu\mu%
\let\@Oldnu\nu%
\let\@Oldxi\xi%
\let\@Oldpi\pi%
\let\@Oldvarpi\varpi%
\let\@Oldrho\rho%
\let\@Oldvarrho\varrho%
\let\@Oldsigma\sigma%
\let\@Oldvarsigma\varsigma%
\let\@Oldtau\tau%
\let\@Oldupsilon\upsilon%
\let\@Oldphi\phi%
\let\@Oldvarphi\varphi%
\let\@Oldchi\chi%
\let\@Oldpsi\psi%
\let\@Oldomega\omega%
\renewcommand{\alpha}{\mymath{\@Oldalpha}\xspace}%
\renewcommand{\beta}{\mymath{\@Oldbeta}\xspace}%
\renewcommand{\gamma}{\mymath{\@Oldgamma}\xspace}%
\renewcommand{\delta}{\mymath{\@Olddelta}\xspace}%
\renewcommand{\epsilon}{\mymath{\@Oldepsilon}\xspace}%
\renewcommand{\varepsilon}{\mymath{\@Oldvarepsilon}\xspace}%
\renewcommand{\zeta}{\mymath{\@Oldzeta}\xspace}%
\renewcommand{\eta}{\mymath{\@Oldeta}\xspace}%
\renewcommand{\theta}{\mymath{\@Oldtheta}\xspace}%
\renewcommand{\vartheta}{\mymath{\@Oldvartheta}\xspace}%
\renewcommand{\iota}{\mymath{\@Oldiota}\xspace}%
\renewcommand{\kappa}{\mymath{\@Oldkappa}\xspace}%
\renewcommand{\lambda}{\mymath{\@Oldlambda}\xspace}%
\renewcommand{\mu}{\mymath{\@Oldmu}\xspace}%
\renewcommand{\nu}{\mymath{\@Oldnu}\xspace}%
\renewcommand{\xi}{\mymath{\@Oldxi}\xspace}%
\renewcommand{\pi}{\mymath{\@Oldpi}\xspace}%
\renewcommand{\varpi}{\mymath{\@Oldvarpi}\xspace}%
\renewcommand{\rho}{\mymath{\@Oldrho}\xspace}%
\renewcommand{\varrho}{\mymath{\@Oldvarrho}\xspace}%
\renewcommand{\sigma}{\mymath{\@Oldsigma}\xspace}%
\renewcommand{\varsigma}{\mymath{\@Oldvarsigma}\xspace}%
\renewcommand{\tau}{\mymath{\@Oldtau}\xspace}%
\renewcommand{\upsilon}{\mymath{\@Oldupsilon}\xspace}%
\renewcommand{\phi}{\mymath{\@Oldphi}\xspace}%
\renewcommand{\varphi}{\mymath{\@Oldvarphi}\xspace}%
\renewcommand{\chi}{\mymath{\@Oldchi}\xspace}%
\renewcommand{\psi}{\mymath{\@Oldpsi}\xspace}%
\renewcommand{\omega}{\mymath{\@Oldomega}\xspace}%

%% Commands
\DeclareRobustCommand{\isabout}{\sim\,}
\DeclareRobustCommand{\isAbout}{\isabout}
\DeclareRobustCommand{\about}{\mymath{\@oldsim\!\,}}
\DeclareRobustCommand{\goesto}{\mymath{ \, \Rightarrow \, }}
\DeclareRobustCommand{\isdefined}{ \equiv }
\DeclareRobustCommand{\isdefinedas}{ \equiv }
%\DeclareRobustCommand{\expectation}[1]{\mymath{ \mathcal{E}\lbrack#1\rbrack }}
\DeclareRobustCommand{\FT}[1]{\mymath{ \mathcal{FT}\lbrack {#1} \rbrack }}
\DeclareRobustCommand{\LT}[1]{\mymath{ \mathcal{LT}\lbrack {#1} \rbrack }}
\DeclareRobustCommand{\operand}{\mymath{ \bullet }}
\DeclareRobustCommand{\scalesas}{\mymath{ \propto }}
\DeclareRobustCommand{\powerten}[1]{\mymath{ \power{10}{#1} }}


%% Parenthetic operations
\DeclareRobustCommand{\ofOrder}[1]{\mymath{ \mathcal{O}\parenths{#1} }}
\DeclareRobustCommand{\orderof}[1]{ \ofOrder{#1} }
\DeclareRobustCommand{\isOfOrder}[1]{\mymath{ \sim \ofOrder{#1} }}
\DeclareRobustCommand{\expectationOf}[1]{\mymath{ \mathscr{E}\bracs{#1} }}
\DeclareRobustCommand{\DeltaOf}[1]{\mymath{ \Delta\!\mspace{2.0mu}{#1} }}
\DeclareRobustCommand{\deltaOf}[1]{\mymath{ \delta\!\mspace{2.0mu}{#1} }}
\DeclareRobustCommand{\argOf}[1]{\mymath{ \arg\!\parenths{#1} }}
\DeclareRobustCommand{\sinOf}[1]{\mymath{ \sin\!\parenths{#1} }}
\DeclareRobustCommand{\cosOf}[1]{\mymath{ \cos\!\parenths{#1} }}
\DeclareRobustCommand{\tanOf}[1]{\mymath{ \tan\!\parenths{#1} }}
\DeclareRobustCommand{\sinhOf}[1]{\mymath{ \sinh\!\parenths{#1} }}
\DeclareRobustCommand{\coshOf}[1]{\mymath{ \cosh\!\parenths{#1} }}
\DeclareRobustCommand{\tanhOf}[1]{\mymath{ \tanh\!\parenths{#1} }}
\DeclareRobustCommand{\arcsinOf}[1]{\mymath{ \arcsin\!\parenths{#1} }}
\DeclareRobustCommand{\arccosOf}[1]{\mymath{ \arccos\!\parenths{#1} }}
\DeclareRobustCommand{\arctanOf}[1]{\mymath{ \arctan\!\parenths{#1} }}
\DeclareRobustCommand{\arcsinhOf}[1]{\mymath{ \arcsinh\!\parenths{#1} }}
\DeclareRobustCommand{\arccoshOf}[1]{\mymath{ \arccosh\!\parenths{#1} }}
\DeclareRobustCommand{\arctanhOf}[1]{\mymath{ \arctanh\!\parenths{#1} }}

%% Numbers
\DeclareRobustCommand{\nhalfs}[1]{\mymath{\frac{#1}{2}\,}\xspace}
\DeclareRobustCommand{\nthirds}[1]{\mymath{\frac{#1}{3}\,}\xspace}
\DeclareRobustCommand{\nquarters}[1]{\mymath{\frac{#1}{4}\,}\xspace}
\DeclareRobustCommand{\half}{\nhalfs{1}\xspace}
\DeclareRobustCommand{\onethird}{\nthirds{1}\xspace}
\DeclareRobustCommand{\onequarter}{\nquarters{1}\xspace}
\DeclareRobustCommand{\oneover}[1]{\mymath{\frac{1}{#1}}\xspace}
\DeclareRobustCommand{\I}{\mymath{\imath}}
\let\@oldRe\Re
\let\@oldIm\Im
\DeclareRobustCommand{\Im}{\mymath{ \@oldIm{}\mathfrak{m} }\xspace}
\DeclareRobustCommand{\Re}{\mymath{ \@oldRe{}\mathfrak{e}\mspace{3mu} }\xspace}
\DeclareRobustCommand{\ImaginaryPart}[1]{\mymath{ \,\Im\!\,\braces{#1} }\xspace}
\DeclareRobustCommand{\RealPart}[1]{\mymath{ \,\Re\!\braces{#1} }\xspace}
\DeclareRobustCommand{\percent}{\%\xspace}

%% Groups
\DeclareRobustCommand{\group}[1]{\mymath{\mayberm{#1}}}
\DeclareRobustCommand{\Ugroup}[1]{\group{U}\parenths{#1}}
\DeclareRobustCommand{\SUgroup}[1]{\group{S}\Ugroup{#1}}
\DeclareRobustCommand{\Ogroup}[1]{\group{O}\parenths{#1}}
\DeclareRobustCommand{\SOgroup}[1]{\group{S}\Ogroup{#1}}
\DeclareRobustCommand{\Egroup}[1]{\group{E}_{#1}}
\DeclareRobustCommand{\directsum}{\mymath{\oplus}}
\DeclareRobustCommand{\directprod}{\mymath{\otimes}}
\DeclareRobustCommand{\covers}{\mymath{\supset}}
\DeclareRobustCommand{\exclude}{\mymath{\backslash}}

%% Physics
\DeclareRobustCommand{\commutator}[2]{\sqbracs{{#1},{#2}}}
\DeclareRobustCommand{\anticommutator}[2]{\braces{{#1},{#2}}}

%% Tensors
\DeclareRobustCommand{\Kronecker}{\mymath{\delta}\xspace} % have to specify indices separately now
\DeclareRobustCommand{\LeviCivita}{\mymath{\epsilon}\xspace} % have to specify indices separately now

%% Vectors, tuples and sets
\DeclareRobustCommand{\cross}{\mymath{\times}\xspace}
\DeclareRobustCommand{\bvec}[1]{\mymath{\bm{#1}}\xspace}
\DeclareRobustCommand{\colset}[1]{\mymath{\begin{Bmatrix}#1\end{Bmatrix}}\xspace}
\DeclareRobustCommand{\coltuple}[1]{\mymath{\begin{pmatrix}#1\end{pmatrix}}\xspace}
\DeclareRobustCommand{\colvector}[1]{\mymath{\begin{pmatrix}#1\end{pmatrix}}\xspace}
\DeclareRobustCommand{\colthreevec}[3]{\mymath{\begin{pmatrix}#1\\ #2\\ #3\end{pmatrix}}\xspace}
\DeclareRobustCommand{\rowset}[1]{\braces{#1}\xspace}
\DeclareRobustCommand{\rowtuple}[1]{\parenths{#1}\xspace}
\DeclareRobustCommand{\rowvector}[1]{\parenths{#1}\xspace}
\DeclareRobustCommand{\rowthreevec}[3]{\parenths{{#1}, {#2}, {#3}}\xspace}

%% Ranges
\DeclareRobustCommand{\rangeSS}[1]{\parenths{#1}\xspace}
\DeclareRobustCommand{\rangeSH}[1]{\left({#1}\right]\xspace}
\DeclareRobustCommand{\rangeHS}[1]{\left[{#1}\right)\xspace}
\DeclareRobustCommand{\rangeHH}[1]{\sqbracs{#1}\xspace}
\DeclareRobustCommand{\softrange}[1]{\rangeSS{#1}}
\DeclareRobustCommand{\hardrange}[1]{\rangeHH{#1}}

%% Matrix
\DeclareRobustCommand{\boldmatrix}[1]{\mymath{\bm{\mathrm{#1}}}\xspace}
\DeclareRobustCommand{\transposeT}{\MathUpright{T}\,}
\DeclareRobustCommand{\hermitianT}{\dagger}
\DeclareRobustCommand{\twomatrix}[2]{\mymath{\begin{pmatrix}#1\\ #2\end{pmatrix}}\xspace}
\DeclareRobustCommand{\threematrix}[3]{\mymath{\begin{pmatrix}#1\\ #2\\ #3\end{pmatrix}}\xspace}

%% Differentials
\DeclareRobustCommand{\diff}[1]{\mymath{\mathrm{d} #1}}
\DeclareRobustCommand{\pdiff}[1]{\mymath{\partial #1}}
\DeclareRobustCommand{\dByd}[2]{\mymath{ \frac{\diff{#1}}{\diff{#2}} }}
\DeclareRobustCommand{\pdByd}[2]{\mymath{ \frac{\pdiff{#1}}{\pdiff{#2}} }}
\DeclareRobustCommand{\DeltaVec}[1]{\mymath{\boldsymbol{\Delta}\mathbf{#1}}}
\DeclareRobustCommand{\DeltaN}[1]{\mymath{\Delta #1}}
\DeclareRobustCommand{\deltaVec}[1]{\mymath{\boldsymbol{\delta}\mathbf{#1}}}
\DeclareRobustCommand{\deltaN}[1]{\mymath{\delta #1}}
\DeclareRobustCommand{\d}[1]{\mymath{\mathrm{d}#1}}
\DeclareMathOperator{\curl}{curl} % curl
%\DeclareMathOperator{\div}{div} % div
\DeclareRobustCommand{\gradCross}[1]{\mymath{\nabla \cross #1}} % curl
\DeclareRobustCommand{\gradDot}[1]{\mymath{\nabla \dot #1}} % div
\DeclareRobustCommand{\Laplacian}{\mymath{\backslash}}
\DeclareRobustCommand{\dAlembertian}{\mymath{\box^{2}}} % I like it with power of 2 attached :-)
\DeclareRobustCommand{\exclude}{\mymath{\backslash}}


%% Statistics and probability
\DeclareRobustCommand{\mean}[1]{\angles{#1}}
\DeclareRobustCommand{\given}{\mymath{\vert}}
\DeclareRobustCommand{\probabilityP}{\mymath{\mayberm{p}}}
\DeclareRobustCommand{\probability}[1]{\mymath{\probabilityP\parenths{#1}}}


%% Principle value integral signs (from UK TeX FAQ)
\def\Xint#1{\mathchoice
   {\XXint\displaystyle\textstyle{#1}}%
   {\XXint\textstyle\scriptstyle{#1}}%
   {\XXint\scriptstyle\scriptscriptstyle{#1}}%
   {\XXint\scriptscriptstyle\scriptscriptstyle{#1}}%
   \!\int}
\def\XXint#1#2#3{{\setbox0=\hbox{$#1{#2#3}{\int}$}
     \vcenter{\hbox{$#2#3$}}\kern-.5\wd0}}
\def\ddashint{\Xint=}
\def\dashint{\Xint-}