\documentclass{article}
\usepackage{amsmath, amsthm}
\usepackage{fancyhdr}
\usepackage{amsfonts}
\usepackage[ngerman]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[onehalfspacing]{setspace}
\usepackage{graphicx}
\usepackage{enumitem}
\usepackage{mathtools}
\usepackage{tikz}
\pagestyle {fancy}
\rhead {Models of Neural Systems}
\lhead {Benjamin Mitzkus, Felicia Saar}
\renewcommand{\headrulewidth}{0.5pt}
\renewcommand{\footrulewidth}{0.5pt}
\renewcommand{\arraystretch}{1.5}
\DeclareMathOperator{\R}{\mathbb{R}}
\DeclareMathOperator{\Q}{\mathbb{Q}}
\DeclareMathOperator{\N}{\mathbb{N}}
\DeclareMathOperator{\Z}{\mathbb{Z}}
\DeclareMathOperator{\C}{\mathbb{C}}
\let\oldforall\forall
\renewcommand{\forall}{\hspace{3pt}\oldforall\hspace{2pt}}
\let\oldexists\exists
\renewcommand{\exists}{\hspace{3pt}\oldexists\hspace{3pt}}
\DeclareMathOperator{\mv}{mV}
\DeclareMathOperator{\ns}{nS}


\begin{document}
\section*{Exercise 1}
\subsection*{Task 1}
\input{Aufgabe1.tex}
\subsection*{Task 2}
\input{Aufgabe2.tex}
\subsection*{Task 3}
\input{Aufgabe3.tex}
\subsection*{Task 4}
\input{Aufgabe4.tex}
\subsection*{Task 5}
\input{Aufgabe5.tex}

\end{document}
