maths.sty

%% maths.tex
%% Copyright 2023 Tom M. Ragonneau
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.3
% of this license or (at your option) any later version.
% The latest version of this license is in
%   http://www.latex-project.org/lppl.txt
% and version 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained'.
%
% The Current Maintainer of this work is Tom M. Ragonneau.
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{maths}[2023/01/26 Maths support package of Tom M. Ragonneau]

\RequirePackage{bm}
\RequirePackage{empheq}
\RequirePackage{esint}
\RequirePackage[bb=dsfontserif]{mathalpha}
\RequirePackage{mathtools}
\usepackage[bbgreekl]{mathbbol}
\DeclareSymbolFontAlphabet{\mathbbm}{bbold}
\DeclareSymbolFontAlphabet{\mathbb}{AMSb}
\newcommand{\ind}[2]{\operatorname{\mathbbm{1}}\;\!\!\!\big(#2\in#1\big)}

% Upright letters
\newcommand{\eu}{\mathrm{e}}
\newcommand{\iu}{\mathrm{i}}
\newcommand{\ju}{\mathrm{j}}
\newcommand{\du}{\mathrm{d}}

% Sets
\def\RR{\mathbb{R}}
\def\BB{\mathcal{B}}
\def\SS{\mathbb{S}}
\def\ZZ{\mathbb{Z}}
\def\NN{\mathbb{N}}
\def\FF{\mathbb{F}}
\def\CC{\mathbb{C}}

% Transpose
\newcommand{\T}{\mathsf{T}}

% Operators
\DeclareMathOperator*{\argmax}{arg\,max}
\DeclareMathOperator*{\argmin}{arg\,min}
\DeclareMathOperator{\bigo}{\mathcal{O}}
\DeclareMathOperator{\card}{card}
\DeclareMathOperator{\codim}{codim}
\DeclareMathOperator{\cond}{\kappa}
\DeclareMathOperator{\conv}{conv}
\DeclareMathOperator{\cov}{cov}
\DeclareMathOperator{\lito}{o}
\DeclareMathOperator{\rank}{rank}
\DeclareMathOperator{\sgn}{sgn}
\DeclareMathOperator{\vspan}{span}

% Other operators
\newcommand{\abs}[2][]{#1\lvert#2#1\rvert}
\newcommand{\ceil}[2][]{#1\lceil#2#1\rceil}
\newcommand{\floor}[2][]{#1\lfloor#2#1\rfloor}
\newcommand{\norm}[2][]{#1\lVert#2#1\rVert}
\newcommand{\set}[2][]{#1\{#2#1\}}
\newcommand{\inner}[2][]{#1\langle#2#1\rangle}

% Equality by definition
\newcommand{\eqdef}{\mathrel{\stackrel{\mathsf{def}}{=}}}

% Fine-tuning spacing in formulas
% Make @ behave as per catcode 13 (active). The TeXbook, p. 155.
\mathcode`@="8000{\catcode`\@=\active\gdef@{\mkern1mu}}


\newcommand{\dist}{\operatorname{dist}}