\RequirePackage{ifluatex}
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\usepackage[left=2.1cm,right=3.1cm]{geometry}
\usepackage[ngerman]{babel}
%\usepackage[utf8]{inputenc} %not recommended with lualatex

\usepackage{zref-base}
\usepackage{etoolbox}
\usepackage{xparse}%better macros
\usepackage{chngcntr}
\usepackage{calc}

\usepackage{scalerel,stackengine}

\usepackage[T1]{fontenc}
\ifluatex
\usepackage{fontspec}
\fi

\usepackage[texindy]{imakeidx}
\makeindex[name=semester1,title={Symbolverzeichnis (1. Semester)}]
\makeindex[name=semester2,title={Symbolverzeichnis (2. Semester)}]
\makeindex[name=symbols,title=Symbolverzeichnis]

\usepackage[xindy,acronym]{glossaries}
\makeglossaries

\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsfonts}
\usepackage{mathtools}
\usepackage{latexsym}
\usepackage{marvosym} %lighning
\usepackage{bbm} %unitary matrix 1
\usepackage{cancel}
\usepackage{xfrac}%sfrac -> fractions e.g. 3/4

\usepackage[table]{xcolor}
\usepackage{graphicx}

\usepackage{enumerate}
\usepackage{enumitem} %customize label

\usepackage{tabularx}
\usepackage{multirow}
\usepackage{booktabs}

\usepackage{ulem} %better underlines

\usepackage{parskip}%split paragraphs by vspace instead of intendations
\usepackage{tocloft}
\usepackage{fancyhdr}
\usepackage{titlesec}%customize titles
\usepackage{marginnote}

\usepackage[amsthm,thmmarks,hyperref]{ntheorem}%customize theorem-environments more effectively
\usepackage[ntheorem,framemethod=TikZ]{mdframed}

\usepackage[bookmarks=true]{hyperref}
\hypersetup{
	colorlinks,
	citecolor=green,
	filecolor=green,
	linkcolor=blue,
	urlcolor=green
}
\usepackage{cleveref}
\usepackage{bookmark}

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%numbered theorems
\theoremstyle{break}
\theorembodyfont{}

\mdfdefinestyle{boxedtheorem}{%
	outerlinewidth=3pt,%
	skipabove=5pt,%
	skipbelow=10pt,%
	frametitlefont=\normalfont\bfseries\color{black},%
}

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style=boxedtheorem,%
innertopmargin=\topskip,%
innerbottommargin=\topskip,%
linecolor=darkgrey,%
backgroundcolor=lightgrey,%
]{theorem}{Theorem}[section]
\newmdtheoremenv[%
style=boxedtheorem,%
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bottomline=false,%
innertopmargin=\topskip,%
innerbottommargin=\topskip,%
backgroundcolor=lightgrey,%
]{proposition}[theorem]{Satz}
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style=boxedtheorem,%
linecolor=darkgrey,%
topline=false,%
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bottomline=false,%
backgroundcolor=lightgrey,%
innertopmargin=\topskip,%
innerbottommargin=\topskip,%
]{lemma}[theorem]{Lemma}
\newmdtheoremenv[%
style=boxedtheorem,%
linecolor=red,%
topline=false,%
rightline=false,%
bottomline=false,%
innertopmargin=0,%
innerbottommargin=-3pt,%
]{definition}[theorem]{Definition}
\newmdtheoremenv[%
outerlinewidth=3pt,%
linecolor=black,%
topline=false,%
rightline=false,%
bottomline=false,%
innertopmargin=0pt,%
innerbottommargin=-3pt,%
frametitlefont=\normalfont\bfseries\color{black},%
skipabove=5pt,%
skipbelow=10pt,%
]{conclusion}[theorem]{Folgerung}
\newmdtheoremenv[%
hidealllines=true,%
frametitlefont=\normalfont\bfseries\color{black},%
innerleftmargin=0pt,%
skipabove=5pt,%
innerleftmargin=10pt,%
]{remark}[theorem]{\hspace*{-10pt}$\blacktriangleright$\hspace*{\dimexpr 10pt - \blacktrianglewidth\relax}Bemerkung}
\newmdtheoremenv[%
hidealllines=true,%
frametitlefont=\normalfont\bfseries\color{black},%
innerleftmargin=10pt,%
]{example}[theorem]{\hspace*{-10pt}\rule{5pt}{5pt}\hspace*{5pt}Beispiel}

%unnumbered theorems
\theoremstyle{nonumberbreak}
\theoremindent0cm
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style=boxedtheorem,%
linecolor=red,%
topline=false,%
rightline=false,%
bottomline=false,%
innertopmargin=1pt,%
innerbottommargin=1pt,%
]{*definition}{Definition}
\newmdtheoremenv[%
hidealllines=true,%
frametitlefont=\normalfont\bfseries\color{black},%
innerleftmargin=0pt,%
skipabove=5pt,%
innerleftmargin=10pt,%
]{*remark}{\hspace*{-10pt}$\blacktriangleright$\hspace*{\dimexpr 10pt - \blacktrianglewidth\relax}Bemerkung}
\newmdtheoremenv[%
hidealllines=true,%
innerleftmargin=10pt,%
]{*example}{\hspace*{-10pt}\rule{5pt}{5pt}\hspace*{5pt}Beispiel}

%Hinweis-Theoremstyle and environment
%To get rid of the parentheses, a new theorem style is neccessary (definition of nonumberbreak from ntheorem.sty)
%to achieve the underlining, this needed to put in the theoremstyle definition
\theoremheaderfont{\mdseries}
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\theorempostskip{0pt}
\makeatletter
\newtheoremstyle{noparentheses}%
	{\item[\rlap{\vbox{\hbox{\hskip\labelsep \theorem@headerfont
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	{\item[\rlap{\vbox{\hbox{\hskip\labelsep \theorem@headerfont
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\newtheoremstyle{underlinedPlain}%
	{\item[\hskip\labelsep \uline{\theorem@headerfont ##1\theorem@separator}]}%
	{\item[\hskip\labelsep \uline{\theorem@headerfont ##1\ \theorem@headerfont(##3)\theorem@separator}]}
\newtheoremstyle{underlinedEnvironment}{}%
{\item[\hskip\labelsep \uline{##1\theorem@headerfont ##3\theorem@separator}]}
\makeatother

\theoremstyle{noparentheses}
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\theoremstyle{underlinedPlain}
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]{hint}{\hspace*{\dimexpr - \mdflength{innerleftmargin}\relax}Hinweis}

\theoremstyle{underlinedEnvironment}
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	hidealllines=true,%
	innerleftmargin=1em,%
	innerrightmargin=0,%
	skipbelow=0pt,%
]{underlinedenvironment}{\hspace*{\dimexpr -\mdflength{innerleftmargin}\relax}}

\theoremstyle{underlinedPlain}
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\theorembodyfont{\small}
\theoremseparator{:}
\theorempreskip{5pt}
\theoremsymbol{$\blacksquare$}
\renewtheorem{proof}{Beweis}

%for \cref: printed environment names
\crefname{theorem}{Theorem}{Theoreme}
\crefname{proposition}{Satz}{Sätze}
\crefname{lemma}{Lemma}{Lemmata}
\crefname{conclusion}{Folgerung}{Folgerungen}
\crefname{definition}{Definition}{Definitionen}
\crefname{remark}{Bemerkung}{Bemerkungen}
\crefname{example}{Beispiel}{Beispiele}
\crefname{*definition}{Definition}{Definitionen}
\crefname{*remark}{Bemerkung}{Bemerkungen}
\crefname{*example}{Beispiel}{Beispiele}

\makeatletter
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\newcommand*{\proplbl}[1]{%
	\@bsphack
	\begingroup
	\label{#1}%
	\zref@setcurrent{default}{\arabic{chapter}}%
%		\zref@wrapper@immediate{%
		\zref@labelbyprops{#1@chapter}{default}
%		}
	\endgroup
	\@esphack
}
\newcommand*{\propref}[1]{%
	\ifcsdef{r@#1}%in first compilation the label may not be defined yet
	{%
		\zref@refused{#1@chapter}%
		\ifnumcomp{\value{chapter}}{=}{\zref@extractdefault{#1@chapter}{default}{0}}%
		{%same chapter
			\mbox{\cref{#1}}%
		}%
		{%otherwise
			\def\propositionref@current@type{}%
			\cref@gettype{#1}{\propositionref@current@type}%get the environment's name
			%example for following line:
			%\crefformat{truetheorem}{\cref@truetheorem@name~##2\rom{\zref@extractdefault{#1}{#1chapter}{1}}.##1##3}
			%this changes the format used by \cref to <environtment name> <chapter-number>.<section-number>.<theorem number>
			\crefformat{\propositionref@current@type}{%
				\csname cref@\propositionref@current@type @name\endcsname ~##2\rom{\zref@extractdefault{#1@chapter}{default}{1}}.##1##3%
			}%
			\mbox{\cref{#1}}%
			\crefformat{\propositionref@current@type}{%
				\csname cref@\propositionref@current@type @name\endcsname~##2##1##3%
			}%
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	}%
	{??}%similar to \ref\cref: question marks in case of undefined labels
}
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		{\index[semester2]{#2#3#4}}%
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}
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	{%
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			{\setlength{\belowdisplayskip}{#4}}%
			{\setlength{\abovedisplayskip}{#3}}%
	}%
	{%
		\setlength{\abovedisplayskip}{#3}%
		\setlength{\belowdisplayskip}{#4}%
	}%
}

\NewDocumentCommand{\transpose}{m}{\ensuremath{#1^\mathsf{T}}}

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	\begingroup%
	\setlength{\abovedisplayskip}{\dimexpr -\parskip + 1pt\relax}%
	\setlength{\belowdisplayskip}{0pt}%
	\IfBooleanTF{#1}%
		{\parbox[c]{\linewidth}{\begin{flalign*}#2&&\end{flalign*}}}%}
		{\parbox[c]{\linewidth}{\begin{flalign}#2&&\end{flalign}}}%}
	\endgroup%
}

\newcommand\equalhat{\mathrel{\stackon[1.5pt]{=}{\stretchto{%
	\scalerel*[\widthof{=}]{\wedge}{\rule{1ex}{3ex}}}{0.5ex}}}}

%General newcommands!
\newcommand{\comp}{\mathbb{C}} % complex set C
\newcommand{\real}{\mathbb{R}} % real set R
\newcommand{\whole}{\mathbb{Z}} % whole number Symbol
\newcommand{\natur}{\mathbb{N}} % natural number Symbol
\newcommand{\ratio}{\mathbb{Q}} % rational number symbol
\newcommand{\field}{\mathbb{K}} % general field for the others above!
\newcommand{\diff}{\mathrm{d}} % differential d
\newcommand{\s}{\,\,}     % space after the function in the intergral
\newcommand{\cont}{\mathcal{C}} % Contour C
\newcommand{\fuk}{f(z) \s\diff z} % f(z) dz
\newcommand{\diffz}{\s\diff z}
\newcommand{\subint}{\int\limits} % lower boundaries for the integral
\newcommand{\poly}{\mathcal{P}} % special P - polygon
\newcommand{\defi}{\mathcal{D}} % D for the domain of a function
\newcommand{\cover}{\mathcal{U}} % cover for a set
\newcommand{\setsys}{\mathcal{M}} % set system M
\newcommand{\setnys}{\mathcal{N}} % set system N
\newcommand{\zetafunk}{f(\zeta)\s\diff \zeta} %f(zeta) d zeta
\newcommand{\ztfunk}{f(\zeta)} % f(zeta)
\newcommand{\bocirc}{S_r(z)}
\newcommand{\prop}{\,|\,}
\newcommand*{\QEDA}{\hfill\ensuremath{\blacksquare}} %tombstone
\newcommand{\emptybra}{\{\varnothing\}} % empty set with set-bracket
\newcommand{\realpos}{\real_{>0}}
\newcommand{\realposr}{\real_{\geq0}}
\newcommand{\naturpos}{\natur_{>0}}
\newcommand{\Imag}{\operatorname{Im}} % Imaginary symbol
\newcommand{\Realz}{\operatorname{Re}} % Real symbol
\newcommand{\norm}{\Vert \cdot \Vert}
\newcommand{\metric}{\vert \cdot \vert}
\newcommand{\foralln}{\forall n} %all n
\newcommand{\forallnset}{\forall n \in \natur} %all n € |N
\newcommand{\forallnz}{\forall n \geq _0} % all n >= n_0
\newcommand{\conjz}{\overline{z}} % conjugated z
\newcommand{\tildz}{\tilde{z}} % different z
\newcommand{\lproofar}{"`$ \Leftarrow $"'} % "`<="'
\newcommand{\rproofar}{"`$ \Rightarrow $"'} % "`=>"'
\newcommand{\beha}{\Rightarrow \text{ Behauptung}}
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\renewcommand{\epsilon}{\varepsilon}
\renewcommand{\phi}{\varphi}

% Math Operators
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\DeclareMathOperator{\ext}{ext} % Set of outer points
\DeclareMathOperator{\cl}{cl} % Closure
\DeclareMathOperator{\grad}{grad}

%change headings:
\titlelabel{\thetitle.\quad}%. behind section/sub... (3. instead of 3)
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\renewcommand{\thechapter}{\Roman{chapter}}
%italic chapters (due to titlesec package some more stuff)
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%change header:
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\renewcommand{\footrulewidth}{0.3pt}
\lhead{\rightmark}%left: section-number. section-title
\rhead{\leftmark}%right: chapter chapternumber: chapter-title

%change appearence of heading of toc: 0 space above, bold, italic huge toc-heading
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\renewcommand{\cfttoctitlefont}{\itshape\Huge\bfseries}

\pagestyle{fancy}
\pagenumbering{arabic}
%remember chapter-title in \leftmark and \rightmark
\renewcommand{\chaptermark}[1]{%
	\markboth{\chaptername
		\ \thechapter:\ #1}{}}
%remember section title in \leftmark
\renewcommand{\sectionmark}[1]{%
	\markright{\thesection.\ #1}{}}

%change numbering of equations to be section by section
\counterwithout{equation}{section}

\newacronym{gdw}{gdw.}{genau dann wenn}
\newacronym{fa}{fa.}{fast alle}
\newacronym{obda}{oBdA}{ohne Beschränkung der Allgemeinheit}
\newacronym{tf}{TF}{\begriff{Teilfolge}}
\newacronym{hw}{Hw}{\begriff{Häufungswert}}
\newacronym{cf}{CF}{\begriff{\person{Cauchy}-Folge}}
\newacronym{hp}{HP}{\begriff{Häufungspunkt}}
\newacronym{vr}{VR}{Vektorraum}
\newacronym{diffbar}{diffbar}{differenzierbar}

\title{\textbf{Analysis 2. Semester (SS2018)}}
\author{Dozent: Prof. Dr. Friedemann Schuricht\\
	Kursassistenz: Moritz Schönherr}

\begin{document}
\pagenumbering{roman}
\pagestyle{plain}

\maketitle
\tableofcontents

\pagebreak
\pagestyle{fancy}
\pagenumbering{arabic}

\chapter{Test}
\begin{proposition}
\proplbl{aeqv_norm}
\proplbl{chap_15_5}
\proplbl{defLinearFunction}
\proplbl{einseitige_grenzwerte}
\proplbl{lemma_13_10}
\proplbl{additionstheoreme}
Test für Labels.
\end{proposition}

\setcounter{section}{15}
\setcounter{chapter}{4}
\chapter{Differentiation}
\include{./TeX_files/Wiederholung_und_Motivation}
\include{./TeX_files/Ableitung}
\include{./TeX_files/Richtungsableitung}
\include{./TeX_files/Integration}
\include{./TeX_files/Differentiation_2}


\end{document}