layout.tex

\newcommand{\mydate}{}
\newcommand{\newdate}[1]{\renewcommand{\mydate}{#1}}

\usepackage{fancyhdr}

\pagestyle{fancy}
\fancyfoot[OC, EC]{}
\fancyfoot[EL, OR]{\textbf\thepage}
\fancyhead[EL]{\textbf{\nouppercase\rightmark}}
\fancyhead[OR]{\textbf{\nouppercase\leftmark}}
\fancyhead[ER, OL]{}

\makeatletter
\renewcommand{\maketitle}{
\begin{titlepage}
\vspace*{3cm}

\begin{center}
\rule{12cm}{1.5pt}
\vspace{0.5cm}

{\Huge\bfseries \@title}

\vspace{1cm}

{\LARGE \@date

Vorlesung von \@author}
\vspace{1cm}
\rule{12cm}{1.5pt}

\vspace{4cm}
{\LARGE Vorlesungsmitschrieb von \\[0.1\baselineskip] Jonas Müller \\[0.5\baselineskip]
Heidelberg, den \today}

\end{center}
\end{titlepage}
}
\makeatother

\allowdisplaybreaks