\documentclass[12pt]{article}

% Polices
\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\usepackage{ae,aecompl}
\usepackage{fourier,bm}
\usepackage[T1]{fontenc}
\usepackage[french]{babel}

\usepackage{xcolor}

% Maths / Physique
\usepackage{amsfonts,amsmath,amssymb,amsthm,amscd}
\usepackage[ISO]{diffcoeff}
\usepackage{braket}
\usepackage{nicefrac} % \nicefrac{a}{b} --> "a/b" but nicer
\usepackage[e]{esvect}  % \vv{arg} ou \vv*{arg}{indice}
\usepackage{siunitx}
\sisetup{locale=US,inter-unit-product=\ensuremath{{}·{}}}
\usepackage{physics-ng}

\begin{document}
\texteuro, \eurologo, \aldineright, \decoone, \decotwo
\[
    \dd t \qquad \oiint_\Sigma \vect{B}\cdot\dd\vect{l} = \mu_0 \sum \alpha_i I_i
\] 
$$ \e $$

\[
    \diff{f(t)}{t}
\] 
\[
    a b c \delta \xi \gamma A B C \Delta \Xi \Gamma \textup{A}
\] 
\[
    \dot{\vect{x}} = \diff{\vect{x}}{t}
\] 
\[
    \dot{\vect{\varphi}} = \diff{\vect{\varphi}}{t}
\] 
\[
    \dot{\vect{x}} = \mat{A}\vect{x} = \mathrm{A}\vv{x}
\] 
\[
    \vecu{p} = -\frac{\hbar^2}{2m} \vecu{e}_r \qquad \vecui{a} = \frac{\vect{a}}{|\vect{a}|}
\] 
\[
    \tensor{T} = (T_{ij})
\] 
\end{document}