#LyX 2.5 created this file. For more info see https://www.lyx.org/
\lyxformat 643
\begin_document
\begin_header
\save_transient_properties true
\origin /systemlyxdir/doc/de/
\textclass scrartcl
\begin_preamble
\usepackage{ifpdf}

\ifpdf

\usepackage[colorlinks=true,
 pdftitle=Formelnummerierung, pdfpagemode=none,
 pdfpagelayout=OneColumn, pdfstartview=XYZ,
 pdfauthor={Uwe Stöhr},
 pdfsubject={LaTeX/LyX-Nummerierungsbeispiel},
 pdfkeywords={LaTeX, Nummerierung, LyX}]{hyperref}

\else % if DVI

\usepackage[colorlinks=true]{hyperref}

\fi

%Roemischen Gleichungszaehler einrichten  
\newcounter{roem}
\renewcommand{\theroem}{\roman{roem}}

%Merken des Originalzaehlers
\newcommand{\c@org@eq}{}
\let\c@org@eq\c@equation
\newcommand{\org@theeq}{}
\let\org@theeq\theequation

%\setroem aktiviert den roemischen Gleichungszaehler
\newcommand{\setroem}{
  \let\c@equation\c@roem
  \let\theequation\theroem}

%\setarab aktiviert den urspruenglichen arabischen Gleichungszaehler
\newcommand{\setarab}{
  \let\c@equation\c@org@eq
  \let\theequation\org@theeq}
% Added by lyx2lyx
\setlength{\parskip}{\medskipamount}
\setlength{\parindent}{0pt}
\end_preamble
\use_default_options false
\maintain_unincluded_children no
\language ngerman
\language_package default
\inputencoding utf8
\fontencoding auto
\font_roman "ae" "default"
\font_sans "default" "default"
\font_typewriter "default" "default"
\font_math "auto" "auto"
\font_default_family default
\use_non_tex_fonts false
\font_sc false
\font_roman_osf false
\font_sans_osf false
\font_typewriter_osf false
\font_sf_scale 100 100
\font_tt_scale 100 100
\use_microtype false
\use_dash_ligatures false
\graphics default
\default_output_format pdf2
\output_sync 0
\bibtex_command default
\index_command default
\paperfontsize 12
\spacing single
\use_hyperref false
\papersize default
\use_geometry false
\use_package amsmath 2
\use_package amssymb 2
\use_package cancel 1
\use_package esint 1
\use_package mathdots 1
\use_package mathtools 1
\use_package mhchem 1
\use_package stackrel 1
\use_package stmaryrd 1
\use_package undertilde 1
\cite_engine basic
\cite_engine_type default
\biblio_style plain
\use_bibtopic false
\use_indices false
\paperorientation portrait
\suppress_date false
\justification default
\crossref_package prettyref
\use_formatted_ref 0
\use_minted 0
\use_lineno 0
\backgroundcolor none
\fontcolor none
\notefontcolor lightgray
\boxbgcolor red
\table_border_color default
\table_odd_row_color default
\table_even_row_color default
\table_alt_row_colors_start 1
\index Stichwortverzeichnis
\shortcut idx
\color #008000
\end_index
\secnumdepth 4
\tocdepth 3
\paragraph_separation indent
\paragraph_indentation default
\is_math_indent 1
\math_indentation default
\math_numbering_side default
\quotes_style german
\dynamic_quotes 0
\papercolumns 1
\papersides 1
\paperpagestyle empty
\tablestyle default
\tracking_changes false
\output_changes false
\change_bars false
\postpone_fragile_content false
\html_math_output 0
\html_css_as_file 0
\html_be_strict false
\docbook_table_output 0
\docbook_mathml_prefix 1
\docbook_mathml_version 0
\end_header

\begin_body

\begin_layout Standard
Diese Datei ist ein Beispiel zur Verwendung von zwei verschiedenen Formelkategorien.
 Die eine wird arabisch,
 die andere römisch nummeriert.
\end_layout

\begin_layout Standard
\begin_inset Formula 
\begin{equation}
A=B\label{eq:B}
\end{equation}

\end_inset


\begin_inset Formula 
\begin{equation}
A=C\label{eq:C}
\end{equation}

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout

\backslash
setroem
\end_layout

\end_inset


\begin_inset Formula 
\begin{equation}
A=D\label{eq:D}
\end{equation}

\end_inset


\begin_inset Formula 
\begin{equation}
A=E\label{eq:E}
\end{equation}

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout

\backslash
setarab
\end_layout

\end_inset


\begin_inset Formula 
\begin{equation}
A=F\label{eq:F}
\end{equation}

\end_inset


\begin_inset Formula 
\begin{equation}
A=G\label{eq:G}
\end{equation}

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout

\backslash
setroem
\end_layout

\end_inset


\begin_inset Formula 
\begin{equation}
A=H\label{eq:H}
\end{equation}

\end_inset


\begin_inset Formula 
\begin{equation}
A=I\label{eq:I}
\end{equation}

\end_inset


\end_layout

\begin_layout Standard
Querverweise:
 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:B"
nolink "false"

\end_inset

 ,
 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:C"
nolink "false"

\end_inset

 ,
 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:F"
nolink "false"

\end_inset

 ,
 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:G"
nolink "false"

\end_inset

 ,
 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:D"
nolink "false"

\end_inset

 ,
 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:E"
nolink "false"

\end_inset

 ,
 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:H"
nolink "false"

\end_inset

 ,
 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:I"
nolink "false"

\end_inset


\end_layout

\begin_layout Standard
\noindent
\begin_inset CommandInset line
LatexCommand rule
offset "0.5ex"
width "100line%"
height "1pt"

\end_inset


\begin_inset VSpace medskip
\end_inset

Um dieses Beispiel zu erzeugen,
 muss zuerst für die römisch zu nummerierenden Formeln ein eigener Gleichungszähler angelegt werden.
 Dazu gibt man im \SpecialChar LaTeX
-Vorspann Folgendes ein:
\end_layout

\begin_layout Standard

\series bold

\backslash
newcounter{roem}
\begin_inset Newline newline
\end_inset


\backslash
renewcommand{
\backslash
theroem}{
\backslash
roman{roem}}
\end_layout

\begin_layout Standard
\begin_inset Newpage newpage
\end_inset

Damit sich \SpecialChar LaTeX
 den Zählerstand des arabischen Zählers 
\series bold
equation
\series default
 merkt,
 gibt man im Vorspann
\end_layout

\begin_layout Standard

\series bold

\backslash
newcommand{
\backslash
c@org@eq}{}
\begin_inset Newline newline
\end_inset


\backslash
let
\backslash
c@org@eq
\backslash
c@equation
\begin_inset Newline newline
\end_inset


\backslash
newcommand{
\backslash
org@theeq}{}
\begin_inset Newline newline
\end_inset


\backslash
let
\backslash
org@theeq
\backslash
theequation
\end_layout

\begin_layout Standard
ein.
 Um im Dokument zwischen den beiden Nummerierungen umschalten zu können,
 werden folgende beiden Befehle im Vorspann definiert:
\end_layout

\begin_layout Standard

\series bold

\backslash
newcommand{
\backslash
setroem}{
\backslash
let
\backslash
c@equation
\backslash
c@roem
\backslash
let
\backslash
theequation
\backslash
theroem}
\end_layout

\begin_layout Standard
für römische Nummerierung und
\end_layout

\begin_layout Standard

\series bold

\backslash
newcommand{
\backslash
setarab}{
\backslash
let
\backslash
c@equation
\backslash
c@org@eq
\backslash
let
\backslash
theequation
\backslash
org@theeq}
\end_layout

\begin_layout Standard
für arabische.
\end_layout

\begin_layout Standard
Jede Formel im Dokument wird standardmäßig arabisch nummeriert.
 Um auf römische Nummerierung umzuschalten,
 wird im \SpecialChar TeX
-Modus der Befehl 
\series bold

\backslash
setroem
\series default
 eingegeben.
 Auf arabische Nummerierung wird mit dem Befehl 
\series bold

\backslash
setarab
\series default
 umgeschaltet.
\end_layout

\end_body
\end_document
