\ProvidesClass{lecture}
\LoadClass[a4paper]{article}

\RequirePackage[utf8]{inputenc}
\RequirePackage[T1]{fontenc}
\RequirePackage{textcomp}
\RequirePackage[german]{babel}
\RequirePackage{amsmath, amssymb, amsthm}
\RequirePackage{mdframed}
\RequirePackage{fancyhdr}
\RequirePackage{geometry}
\RequirePackage{import}
\RequirePackage{pdfpages}
\RequirePackage{transparent}
\RequirePackage{xcolor}

\DeclareOption{uebung}{
    \makeatletter
    \lhead{\@title}
    \rhead{\@author}
    \makeatother
}
\ProcessOptions\relax

% PAGE GEOMETRY
\geometry{
    left=15mm,
    right=40mm,
    top=20mm,
    bottom=20mm
}

% PARAGRAPH no indent but skip
\setlength{\parskip}{3mm}
\setlength{\parindent}{0mm}

\theoremstyle{definition}
\newmdtheoremenv{satz}{Satz}
\newmdtheoremenv{lemma}{Lemma}
\newmdtheoremenv{korrolar}{Korrolar}
\newmdtheoremenv{definition}{Definition}

\newtheorem{bsp}{Beispiel}
\newtheorem{bem}{Bemerkung}
\newtheorem{aufgabe}{Aufgabe}

\newcommand{\N}{\mathbb{N}}
\newcommand{\R}{\mathbb{R}}
\newcommand{\Z}{\mathbb{Z}}
\newcommand{\Q}{\mathbb{Q}}
\newcommand{\C}{\mathbb{C}}

% HEADERS

\pagestyle{fancy}

\newcommand{\incfig}[1]{%
    \def\svgwidth{\columnwidth}
    \import{./figures/}{#1.pdf_tex}
}
\pdfsuppresswarningpagegroup=1

% horizontal rule
\newcommand\hr{
    \noindent\rule[0.5ex]{\linewidth}{0.5pt}
}