commands.sty

\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{packages/commands}

% Taking derivatives
\newcommand { \dd } [ 2 ] { \dfrac { d #1 } { d #2 } }
\newcommand { \dydx } { \dd yx }
\newcommand { \ddx } [1] { \dd {#1} x }
\newcommand { \ddt } [1] { \dd {#1} t }

% Taking partial derivatives
\newcommand { \pp } [ 2 ] { \frac { \partial #1 } { \partial
#2 } }
\newcommand { \ppx } [1] { \pp {#1} x }
\newcommand { \ppy } [1] { \pp {#1} y }
\newcommand { \ppz } [1] { \pp {#1} z }

% evaluating anti - derivatives
\newcommand { \eval } { \Big | }

% formatting some important single letters
\newcommand { \e } { \mbox { \large $ e $ \rule { 0 in } { 1.6 ex
}}}

% Labelling L ' Hospital ' s Rule
\newcommand { \LH } { \stackrel { \text { LH } } { = } }

% Asking if two things are equal
\newcommand { \eq } { \stackrel { \text { ? } } { = } }

% making a larger decimal point
\newcommand { \bd } { \mbox { \Large . } }

% For using in integrals , like \int\newcommand { \dx } { \ , dx }
\newcommand { \dy } { \ , dy }
\newcommand { \dz } { \ , dz }
\newcommand { \dt } { \ , dt }
\newcommand { \du } { \ , du }
\newcommand { \dv } { \ , dv }
\newcommand { \dtheta } { \ , d \theta }

% For specially formatted fractions
\newcommand { \textfrac } [ 2 ] { \frac { \text { #1 } } {
\text { #2 } } }
\newcommand { \change } [ 2 ] { \frac { \text { change in
#1 } } { \text { change in #2 } } }
% Better appearance for a " skinny frac "
% like \frac 1 x
\newcommand { \sfrac } [ 2 ] { \frac { \ #1 \ } { #2 } }

% domain , image and identity functions
\newcommand { \dom } { \mathop { \rm dom } \nolimits }
\newcommand { \im } { \mathop { \rm im } \nolimits }
\newcommand { \id } { \mathop { \rm id } \nolimits }
% Real numbers , etc .
\usepackage { amsfonts }
\newcommand { \R } { \mathbb { R } }
\newcommand { \Z } { \mathbb { Z } }
\newcommand { \Q } { \mathbb { Q } }
\newcommand { \C } { \mathbb { C } }

% inverse functions
\newcommand { \inv } { { -1 } }
% Making answer blanks
\newcommand { \blank } [ 1 ] { \underline { \hspace * { #1 } }
}
\usepackage { amssymb }
% stands for " not divides "
\newcommand { \notdiv } { \nmid }
% for labeling parts of proofs
\newcommand { \forwards } { ``$ \Rightarrow $ ''}
\newcommand { \contra } { \ensuremath { \Rightarrow
\Leftarrow } }
\newcommand { \backwards } { ``$ \Leftarrow $ ''}



%%% Quantic
\usepackage{braket}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% Fancy boxes for theorem lemma and proof and codes
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{mdframed}


\newcounter{theo}[section]\setcounter{theo}{0}
\renewcommand{\thetheo}{\arabic{section}~-~\arabic{theo}}

\usepackage{xcolor}

\newenvironment{theo}[2][]
    {%
        \refstepcounter{theo}%
        \ifstrempty{#1}%
        % DO THIS
        {
            \mdfsetup{%
            frametitle={%
                    \tikz[baseline=(current bounding box.east),outer sep=0pt]
                    \node[anchor=east,rectangle,fill=bleuRoiUTT]
                    {
                        \strut {\color{white} Théorème }~\thetheo
                    };
                }
            }
        }
        % ELSE
        {
            \mdfsetup{%
                frametitle=
                {%
                    \tikz[baseline=(current bounding box.east),outer sep=0pt]
                    \node[anchor=east,rectangle,fill=bleuRoiUTT]
                    {
                        % Ici c'est le "titre"
                        \strut {\color{white} Théorème ~\thetheo :~ #1 }
                    }
                ;}
            }%
        }%
            \mdfsetup{
                innertopmargin=10pt,linecolor=bleuRoiUTT,%
                linewidth=2pt,topline=true,%
                frametitleaboveskip=\dimexpr-\ht\strutbox\relax
            }
            \begin{mdframed}[]
                \relax%
            \label{#2}
    }
    {
        \end{mdframed}
    }


% Another
\newenvironment{callout}[1]
    {%
        \ifstrempty{#1}%
        % DO THIS
        {
            \mdfsetup{%
            frametitle={%
                    \tikz[baseline=(current bounding box.east),outer sep=0pt]
                    \node[anchor=east,rectangle,fill=bleuRoiUTT]
                    {
                        \strut {}
                    };
                }
            }
        }
        % ELSE
        {
            \mdfsetup{%
                frametitle=
                {%
                    \tikz[baseline=(current bounding box.east),outer sep=0pt]
                    \node[anchor=east,rectangle,fill=bleuRoiUTT]
                    {
                        % Ici c'est le "titre"
                        \strut {
                            {\color{white} #1 }
                        }
                    }
                ;}
            }%
        }%
            \mdfsetup{
                innertopmargin=10pt,linecolor=bleuRoiUTT,%
                linewidth=2pt,topline=true,%
                frametitleaboveskip=\dimexpr-\ht\strutbox\relax
            }
            \begin{mdframed}[]
                \relax%
    }
    {
        \end{mdframed}
    }

%%%%%%%%%%%%%%%%%%- Unicode chars
\DeclareUnicodeCharacter{2212}{-}
\DeclareUnicodeCharacter{2261}{≡}
\DeclareUnicodeCharacter{03C6}{φ}