mystyle.sty

\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{mystyle}[Mein persönlicher Stil]
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}
\usepackage[german]{babel}
\usepackage{url}
\usepackage{graphicx}
\usepackage{float}
\usepackage{booktabs}
\usepackage{enumitem}
\usepackage{amsfonts}
\usepackage{amsmath}
\usepackage[fixamsmath,disallowspaces]{mathtools}
\usepackage{csquotes}
\usepackage{xparse}
\usepackage{bbding} % Stift
%Packages empfholen von Jendrik Stelzner
\usepackage{etoolbox}
\usepackage{microtype} %for better tüpogirrafy
\usepackage{csquotes}
\usepackage{booktabs}
\usepackage[
	backend    = biber,
	style      = alphabetic,
	dateabbrev = false,
	urldate    = long
]{biblatex}

% Hide page number when page is empty
\usepackage{emptypage}
\usepackage{subcaption}
\usepackage{multicol}
\usepackage{xcolor}
% Don't indent paragraphs, leave some space between them
\usepackage{parskip}
% Fancy script capitals
\usepackage{mathrsfs}
\usepackage{cancel}

% Math stuff
\usepackage{amsmath, amsfonts, mathtools, amsthm, amssymb}
\usepackage{bbm} %gestrichene eins
\usepackage{bm}


% Some shortcuts
\newcommand\N{\ensuremath{\mathbb{N}}}
\newcommand\R{\ensuremath{\mathbb{R}}}
\newcommand\Z{\ensuremath{\mathbb{Z}}}
\renewcommand\O{\ensuremath{\emptyset}}
\newcommand\Q{\ensuremath{\mathbb{Q}}}
\newcommand\C{\ensuremath{\mathbb{C}}}

%Make implies and impliedby shorter
\let\implies\Rightarrow
\let\impliedby\Leftarrow
\let\iff\Leftrightarrow
\let\epsilon\varepsilon

% Add \contra symbol to denote contradiction
\usepackage{stmaryrd} % for \lightning
\newcommand\contra{\scalebox{1.5}{$\lightning$}}


%Lecuture Commands
\makeatletter
\def\thm@space@setup{%
  \thm@preskip=\parskip \thm@postskip=0pt
}

\usepackage{xifthen}
\def\testdateparts#1{\dateparts#1\relax}
\def\dateparts#1 #2 #3 #4 #5\relax{
    \marginpar{\small\textsf{\mbox{#1 #2 #3 #5}}}
}

\def\@lecture{}%
\newcommand{\lecture}[3]{
    \ifthenelse{\isempty{#3}}{%
        \def\@lecture{Vorlesung #1}%
    }{%
        \def\@lecture{Vorlesung #1: #3}%
    }%
    \subsection*{\@lecture}
    \marginpar{\small\textsf{\mbox{#2}}}
}

% These are the fancy headers
\usepackage{fancyhdr}
\pagestyle{fancy}



\usepackage{hyperref}
\usepackage[
	capitalise,
	noabbrev,
	nameinlink
]{cleveref}