\documentclass{article}

\usepackage{polyglossia}
\usepackage{amsmath}
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\usepackage{derivative}
\usepackage{mathtools}

\setdefaultlanguage{czech}
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\theoremstyle{plain}
\newtheorem{theorem}{Věta}[section]
\newtheorem{corollary}[theorem]{Důsledek}
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{observation}[theorem]{Pozorování}

\theoremstyle{definition}
\newtheorem{definition}[theorem]{Definice}
\newtheorem{example}[theorem]{Příklad}
\newtheorem{convention}[theorem]{Úmluva}

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\title{Obyčejné diferenciální rovnice (NMMA336)}
\author{Petr Velička \footnote{\href{mailto:petrvel@matfyz.cz}{petrvel@matfyz.cz}}\\přednášející: doc. RNDr. Tomáš Bárta, Ph.D. \footnote{\href{mailto:barta@karlin.mff.cuni.cz}{barta@karlin.mff.cuni.cz}}}
\date{LS 2024/25}

\begin{document}

\maketitle
\thispagestyle{empty}

\include{lokalni-existence}
\include{jednoznacnost-reseni}
\include{maximalni-reseni}
\include{zavislost-na-podmince}
\include{linearni-rovnice}
\include{linearni-rovnice-konst-koef}
\include{stabilita}
\include{prvni-integral}
\include{ljapunovske-funkce}
\include{floquetova-teorie}

\end{document}