\documentclass{article} \usepackage{polyglossia} \usepackage{amsmath} \usepackage{amssymb} \usepackage{amsthm} \usepackage{enumerate} \usepackage[hidelinks]{hyperref} \usepackage{derivative} \overfullrule=1mm \theoremstyle{plain} \newtheorem{theorem}{Theorem}[section] \newtheorem{corollary}[theorem]{Corollary} \newtheorem{lemma}[theorem]{Lemma} \newtheorem{observation}[theorem]{Observation} \theoremstyle{definition} \newtheorem{definition}[theorem]{Definition} \newtheorem{example}[theorem]{Example} \newtheorem{convention}[theorem]{Convention} \newcommand*{\R}{\mathbb{R}} \newcommand*{\N}{\mathbb{N}} \title{Introduction to partial differential equations (NMMA339) -- theory} \author{Petr Velička \footnote{\href{mailto:petrvel@matfyz.cz}{petrvel@matfyz.cz}}\\lecturer: prof. Mgr. Milan Pokorný, Ph.D., DSc. \footnote{\href{mailto:pokorny@karlin.mff.cuni.cz}{pokorny@karlin.mff.cuni.cz}}} \date{LS 2024/25} \begin{document} \maketitle \include{question1} \include{question2} \include{question3} \end{document}