I'm writing a paper in LYX. All my equations are numbered and entered with the built-in wysiwyg math editor, except for one which I had to enter as LATEX. This messed up the numbering in the editor which didn't count the LATEX equation, but the output pdf was fine. In the output pdf file equation numbers are larger by 1 than the equations in the editor after the LATEX equation. There must be a different counter in the lyx editor for equations than in the LATEX output. How can I synchronize them properly? For example, can I write a macro to add 1 to the editor's counter without changing the LATEX counter?
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Technically this doesn't answer your question, so I can delete it if you'd like me to. But as an extension of my last comment: At the end of this post you'll find a sample .lyx file. It demonstrates your method, as well as using either a gathered or an align environment instead of array. Both those environments are available via the GUI, either via the Insert --> Math menu, or by right clicking in an equation and looking under Insert.
Compared to the array, the increase in font size isn't necessary because it doesn't use \textstyle (or whatever array does), and the [2mm] isn't necessary because there is more space between the lines by default than what array does.
Here is a screenshot showing the three approaches. Personally I'd probably use the third one. Note I replaced the \mid with \biggr|.
#LyX 2.2 created this file. For more info see http://www.lyx.org/
\lyxformat 508
\begin_document
\begin_header
\save_transient_properties true
\origin unavailable
\textclass article
\use_default_options true
\maintain_unincluded_children false
\language english
\language_package default
\inputencoding auto
\fontencoding global
\font_roman "default" "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_osf false
\font_sf_scale 100 100
\font_tt_scale 100 100
\graphics default
\default_output_format default
\output_sync 0
\bibtex_command default
\index_command default
\paperfontsize default
\spacing single
\use_hyperref false
\papersize default
\use_geometry false
\use_package amsmath 1
\use_package amssymb 1
\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 true
\use_refstyle 1
\index Index
\shortcut idx
\color #008000
\end_index
\secnumdepth 3
\tocdepth 3
\paragraph_separation indent
\paragraph_indentation default
\quotes_language english
\papercolumns 1
\papersides 1
\paperpagestyle default
\tracking_changes false
\output_changes false
\html_math_output 0
\html_css_as_file 0
\html_be_strict false
\end_header
\begin_body
\begin_layout Standard
Your method:
\begin_inset ERT
status open
\begin_layout Plain Layout
\backslash
large
\end_layout
\begin_layout Plain Layout
\backslash
begin{equation}
\end_layout
\begin_layout Plain Layout
\backslash
begin{array}{c}
\end_layout
\begin_layout Plain Layout
F^{
\backslash
mu
\backslash
nu}(x)=
\backslash
frac{q}{V_{B}(s)
\backslash
cdot
\backslash
left(x-X_{B}(s)
\backslash
right)}
\backslash
\backslash
[2mm]
\end_layout
\begin_layout Plain Layout
\backslash
times
\backslash
frac{d}{ds}
\backslash
left[
\backslash
frac{
\backslash
left(x-X_{B}(s)
\backslash
right)^{
\backslash
mu}V_{B}^{
\backslash
nu}(s)-
\backslash
left(x-X_{B}(s)
\backslash
right)^{
\backslash
nu}V_{B}^{
\backslash
mu}(s)}{V_{B}(s)
\backslash
cdot
\backslash
left(x-X_{B}(s)
\backslash
right)}
\backslash
right]
\backslash
mid_{s=s_{r}}
\end_layout
\begin_layout Plain Layout
\backslash
end{array}
\end_layout
\begin_layout Plain Layout
\backslash
end{equation}
\end_layout
\begin_layout Plain Layout
\backslash
normalsize
\end_layout
\end_inset
\end_layout
\begin_layout Standard
Alternative approach 1:
\begin_inset Formula
\begin{equation}
\begin{gathered}F^{\mu\nu}(x)=\frac{q}{V_{B}(s)\cdot\left(x-X_{B}(s)\right)}\\
\times\frac{d}{ds}\left[\frac{\left(x-X_{B}(s)\right)^{\mu}V_{B}^{\nu}(s)-\left(x-X_{B}(s)\right)^{\nu}V_{B}^{\mu}(s)}{V_{B}(s)\cdot\left(x-X_{B}(s)\right)}\right]\biggr|_{s=s_{r}}
\end{gathered}
\end{equation}
\end_inset
\end_layout
\begin_layout Standard
Alternative approach 2:
\begin_inset Formula
\begin{equation}
\begin{aligned}F^{\mu\nu}(x) & =\frac{q}{V_{B}(s)\cdot\left(x-X_{B}(s)\right)}\\
& \qquad\times\frac{d}{ds}\left[\frac{\left(x-X_{B}(s)\right)^{\mu}V_{B}^{\nu}(s)-\left(x-X_{B}(s)\right)^{\nu}V_{B}^{\mu}(s)}{V_{B}(s)\cdot\left(x-X_{B}(s)\right)}\right]\biggr|_{s=s_{r}}
\end{aligned}
\end{equation}
\end_inset
\end_layout
\end_body
\end_document
answered Oct 13 '17 at 0:07
-
Torbjorn, Thanks a lot. I like your third example. I'll use it in my paper. That solves my problem. – Mark Davidson Oct 13 '17 at 5:01
\begin{multlined} first part \\[2mm] second part \end{multlined}? (Asking as I was wondering if there might be other ways of achieving the same in LyX.) – Torbjørn T. Oct 12 '17 at 12:31