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diff --git a/.gitignore b/.gitignore
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+### LaTeX ###
+## Core latex/pdflatex auxiliary files:
+*.aux
+*.lof
+*.log
+*.lot
+*.fls
+*.out
+*.toc
+*.fmt
+*.fot
+*.cb
+*.cb2
+.*.lb
+
+## Intermediate documents:
+*.dvi
+*.xdv
+*-converted-to.*
+
+## Bibliography auxiliary files (bibtex/biblatex/biber):
+*.bbl
+*.bcf
+*.blg
+*-blx.aux
+*-blx.bib
+*.run.xml
+
+## Build tool auxiliary files:
+*.fdb_latexmk
+*.synctex
+*.synctex(busy)
+*.synctex.gz
+*.synctex.gz(busy)
+*.pdfsync
+
+## Build tool directories for auxiliary files
+# latexrun
+latex.out/
+
+## Auxiliary and intermediate files from other packages:
+# algorithms
+*.alg
+*.loa
+
+# achemso
+acs-*.bib
+
+# amsthm
+*.thm
+
+# beamer
+*.nav
+*.pre
+*.snm
+*.vrb
+
+# changes
+*.soc
+
+# comment
+*.cut
+
+# cprotect
+*.cpt
+
+# elsarticle (documentclass of Elsevier journals)
+*.spl
+
+# endnotes
+*.ent
+
+# fixme
+*.lox
+
+# feynmf/feynmp
+*.mf
+*.mp
+*.t[1-9]
+*.t[1-9][0-9]
+*.tfm
+
+#(r)(e)ledmac/(r)(e)ledpar
+*.end
+*.?end
+*.[1-9]
+*.[1-9][0-9]
+*.[1-9][0-9][0-9]
+*.[1-9]R
+*.[1-9][0-9]R
+*.[1-9][0-9][0-9]R
+*.eledsec[1-9]
+*.eledsec[1-9]R
+*.eledsec[1-9][0-9]
+*.eledsec[1-9][0-9]R
+*.eledsec[1-9][0-9][0-9]
+*.eledsec[1-9][0-9][0-9]R
+
+# glossaries
+*.acn
+*.acr
+*.glg
+*.glo
+*.gls
+*.glsdefs
+*.lzo
+*.lzs
+*.slg
+*.slo
+*.sls
+
+# uncomment this for glossaries-extra (will ignore makeindex's style files!)
+# *.ist
+
+# gnuplot
+*.gnuplot
+*.table
+
+# gnuplottex
+*-gnuplottex-*
+
+# gregoriotex
+*.gaux
+*.glog
+*.gtex
+
+# htlatex
+*.4ct
+*.4tc
+*.idv
+*.lg
+*.trc
+*.xref
+
+# hyperref
+*.brf
+
+# knitr
+*-concordance.tex
+# TODO Uncomment the next line if you use knitr and want to ignore its generated tikz files
+# *.tikz
+*-tikzDictionary
+
+# listings
+*.lol
+
+# luatexja-ruby
+*.ltjruby
+
+# makeidx
+*.idx
+*.ilg
+*.ind
+
+# minitoc
+*.maf
+*.mlf
+*.mlt
+*.mtc[0-9]*
+*.slf[0-9]*
+*.slt[0-9]*
+*.stc[0-9]*
+
+# minted
+_minted*
+*.pyg
+
+# morewrites
+*.mw
+
+# newpax
+*.newpax
+
+# nomencl
+*.nlg
+*.nlo
+*.nls
+
+# pax
+*.pax
+
+# pdfpcnotes
+*.pdfpc
+
+# sagetex
+*.sagetex.sage
+*.sagetex.py
+*.sagetex.scmd
+
+# scrwfile
+*.wrt
+
+# svg
+svg-inkscape/
+
+# sympy
+*.sout
+*.sympy
+sympy-plots-for-*.tex/
+
+# pdfcomment
+*.upa
+*.upb
+
+# pythontex
+*.pytxcode
+pythontex-files-*/
+
+# tcolorbox
+*.listing
+
+# thmtools
+*.loe
+
+# TikZ & PGF
+*.dpth
+*.md5
+*.auxlock
+
+# titletoc
+*.ptc
+
+# todonotes
+*.tdo
+
+# vhistory
+*.hst
+*.ver
+
+# easy-todo
+*.lod
+
+# xcolor
+*.xcp
+
+# xmpincl
+*.xmpi
+
+# xindy
+*.xdy
+
+# xypic precompiled matrices and outlines
+*.xyc
+*.xyd
+
+# endfloat
+*.ttt
+*.fff
+
+# Latexian
+TSWLatexianTemp*
+
+## Editors:
+# WinEdt
+*.bak
+*.sav
+
+# Texpad
+.texpadtmp
+
+# LyX
+*.lyx~
+
+# Kile
+*.backup
+
+# gummi
+.*.swp
+
+# KBibTeX
+*~[0-9]*
+
+# TeXnicCenter
+*.tps
+
+# auto folder when using emacs and auctex
+./auto/*
+*.el
+
+# expex forward references with \gathertags
+*-tags.tex
+
+# standalone packages
+*.sta
+
+# Makeindex log files
+*.lpz
+
+# xwatermark package
+*.xwm
+
+# REVTeX puts footnotes in the bibliography by default, unless the nofootinbib
+# option is specified. Footnotes are the stored in a file with suffix Notes.bib.
+# Uncomment the next line to have this generated file ignored.
+#*Notes.bib
+
+### LaTeX Patch ###
+# LIPIcs / OASIcs
+*.vtc
+
+# glossaries
+*.glstex
diff --git a/physics-ng.pdf b/physics-ng.pdf
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index 0000000..30a2223
--- /dev/null
+++ b/physics-ng.pdf
diff --git a/physics-ng.sty b/physics-ng.sty
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--- /dev/null
+++ b/physics-ng.sty
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+\ProvidesPackage{physics-ng}
+% physics-ng 1.0
+% This material is subject to the LaTeX Project Public License.
+% See http://www.ctan.org/tex-archive/help/Catalogue/licenses.lppl.html for the details of that license.
+%
+% Personal substitute to the obselete physics package, might not be adapted to every one
+% The derivative part and the Dirac brakets are respectively taken of by the
+% diffcoeff and braket packages.
+% It depends on asm ecosystem, siunitx, and esvect (for black board vector notation)
+% design for Fourier mathtype-font with sloped setting
+%
+% Created by Alexis Draussin
+% Updated on December 8, 2022
+% Uploaded on December 20, 2022
+
+\RequirePackage{amsmath}
+\RequirePackage{fourier}
+\RequirePackage{bm}
+\RequirePackage{siunitx}
+\RequirePackage{esvect}
+
+\DeclareOption{bb}{\let\arrowopt = 1}
+\DeclareOption{nobb}{\let\arrowopt = 0} % default
+\ExecuteOptions{nobb}
+\ProcessOptions\relax
+
+% incertitude command, using siunitx
+\newcommand{\incert}[3]{\left(\num{#1}\pm\num{#2}\right)~\si{#3}}
+
+% transforms: Laplace, Fourier and Z
+\DeclareMathAlphabet{\pazocal}{OMS}{zplm}{m}{n} % fourier overwrite the mathcal alpabet
+\newcommand{\LT}[1]{\ensuremath{\pazocal{L}\left\lbrace#1\right\rbrace}}
+\newcommand{\FT}[1]{\ensuremath{\pazocal{F}\left\lbrace#1\right\rbrace}}
+\newcommand{\ZT}[1]{\ensuremath{\pazocal{Z}\left\lbrace#1\right\rbrace}}
+
+% math constants
+\newcommand{\e}{\ensuremath{\mathrm{e}}}
+\newcommand{\im}{\ensuremath{\mathrm{i}}}
+\newcommand{\jm}{\ensuremath{\mathrm{j}}}
+
+% derivative
+\DeclareDocumentCommand\dd{ o g d() }{ % Differential 'd'
+	% o: optional n for nth differential
+	% g: optional argument for readability and to control spacing
+	% d: long-form as in d(cos x)
+	\IfNoValueTF{#2}{
+		\IfNoValueTF{#3}
+            {\mathrm{d}\IfNoValueTF{#1}{}{^{#1}}}
+            {\mathinner{\mathrm{d}\IfNoValueTF{#1}{}{^{#1}}\argopen(#3\argclose)}}
+	    }
+        {\mathinner{\mathrm{d}\IfNoValueTF{#1}{}{^{#1}}#2} \IfNoValueTF{#3}{}{(#3)}}
+	}
+
+% vectors, bb arrows with \vv or \vv* (for indexes)
+\ifx\arrowopt 1 % just use esvect at this point
+    \newcommand{\vect}[1]{\ensuremath{\vv{#1}}} % italic arrowed
+    \newcommand{\mat}[1]{\ensuremath{{\mathrm{#1}}} % roman
+    \newcommand{\tensor}[1]{\ensuremath{\vv{\vv{\mathsf{#1}}}}} % arrow and sans-serif
+\else
+    \newcommand{\vect}[1]{\ensuremath{\bm{#1}}} % bold and italic
+    \newcommand{\mat}[1]{\ensuremath{\bm{\mathbf{#1}}}} % bold and roman
+    \newcommand{\tensor}[1]{\ensuremath{\bm{\mathsf{#1}}}} % bold and sans-serif
+\fi
+\newcommand{\vecu}[1]{\ensuremath{\hat{\vect{#1}}}} % vector unit
+\newcommand{\vecui}[1]{\ensuremath{\hat{\vect{e}}_{\bm{#1}}}} % vector unit wth index
+
+\newcommand{\abs}[1]{\ensuremath{\left|#1\right|}}
+\newcommand{\norm}[1]{\ensuremath{\left\|#1\right\|}}
+
+% Note on vectors:
+% - vec v = (v_i) = (v)_i
+% - product by scalar, no dot xv = x(v)_i
+% - |v| or bb with ||v||
+% - hat e_a = a / |a|
+% - scalar product, dot a . b = sum_i a_ib_i
+% - vector product, cross a x b = sum_j sum_k LeviCivita_ijk a_j b_k
+% - nabla roman, arrow in bb
+% - grad, rot and div with nable notation, letter in bb
+% - laplacian := nabla^2 only
+% - D'Alembertian := square only
+
+% Note on matrices:
+% - mat A = (a_ij) = (A)_ij
+% - scalar product, no dot xA = x(A)_ij
+% - matrix product, no dot AB = sum_j (A)ij(B)jk
+% - unit matrix I = (I)_ij = Krodelta_ij
+% - det A, rank A, tr A, ||A||
+
+% Note on tensors:
+% - dyatic product, between 2 vectors: a otimes b = (ab)_ij = a_ib_j
+% - tensor product, between 2 tensors: T otimes S = T_ij S_kl
+% - inner product, between 2 tensors: T . S = sum_j T_ij S_jk
+% - inner product with a vector: T . a = sum_j T_ij a_j
+% - scalar product, column:  T:S = sum_i sum_j T_ij S_ji
+
+% bunch functions not base-declared
+\DeclareMathOperator{\tr}{tr}
+\DeclareMathOperator{\rank}{rank}
+\DeclareMathOperator{\sinc}{sinc}
+\DeclareMathOperator{\Ei}{Ei}
+\DeclareMathOperator{\Li}{Li}
+\DeclareMathOperator{\Si}{Si}
+\DeclareMathOperator{\erf}{erf}
+\DeclareMathOperator{\erfc}{erfc}
+\DeclareMathOperator{\arccot}{arccot}
+\DeclareMathOperator{\arcsec}{arcsec}
+\DeclareMathOperator{\arccsc}{arccsc}
+\DeclareMathOperator{\sech}{sech}
+\DeclareMathOperator{\csch}{csch}
+\DeclareMathOperator{\arsinh}{arsinh}
+\DeclareMathOperator{\arcosh}{arcosh}
+\DeclareMathOperator{\artanh}{artanh}
+\DeclareMathOperator{\arcoth}{arcoth}
+\DeclareMathOperator{\arsech}{arsech}
+\DeclareMathOperator{\arcsch}{arcsch}
+
+\DeclareDocumentCommand\nqty{}{{\ifnum\z@=`}\fi\@nqty}
+\DeclareDocumentCommand\@nqty{ t\big t\Big t\bigg t\Bigg g o d() d|| }
+{ % Flexible automatic bracketing of an expression in () or [] or {} or ||
+	% Handles manual override of sizing
+	\IfBooleanTF{#1}{\let\ltag\bigl \let\rtag\bigr}{
+		\IfBooleanTF{#2}{\let\ltag\Bigl \let\rtag\Bigr}{
+			\IfBooleanTF{#3}{\let\ltag\biggl \let\rtag\biggr}{
+				\IfBooleanTF{#4}
+				{\let\ltag\Biggl \let\rtag\Biggr}
+				{\let\ltag\left \let\rtag\right}
+			}
+		}
+	}
+	% Handles actual bracketing
+	\IfNoValueTF{#5}{
+		\IfNoValueTF{#6}{
+			\IfNoValueTF{#7}{
+				\IfNoValueTF{#8}
+				{()}
+				{\ltag\lvert{#8}\rtag\rvert}
+			}
+			{\ltag(#7\rtag) \IfNoValueTF{#8}{}{|#8|}}
+		}
+		{\ltag[#6\rtag] \IfNoValueTF{#7}{}{(#7)} \IfNoValueTF{#8}{}{|#8|}}
+	}
+	{\ltag\lbrace#5\rtag\rbrace  \IfNoValueTF{#6}{}{[#6]} \IfNoValueTF{#7}{}{(#7)} \IfNoValueTF{#8}{}{|#8|}}
+	\ifnum\z@=`{\fi}
+}
+
+\newcommand{\comm}[2]{\ensuremath{\nqty[#1,#2]}}
+\newcommand{\acomm}[2]{\ensuremath{\nqty{#1,#2}}}
diff --git a/physics-ng.tex b/physics-ng.tex
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+\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}