Math.lyx: update the section about subequations.lyx

- an extra example file is not necessary since we already describe subequations in the math manual

lib/Makefile.am

@@ -362,7 +362,6 @@ dist_examples_DATA = \
 	examples/splash.lyx \
 	examples/spreadsheet.lyx \
 	examples/sweave.lyx \
-	examples/subequations.lyx \
 	examples/tufte-book.lyx \
 	examples/tufte-handout.lyx \
 	examples/varwidth-floats-side-by-side.lyx \

lib/doc/Changelog-Math-LyX_23.txt

@@ -1,13 +1,10 @@
 For LyX 2.3.0:
 
-Modified (not F, not J):
-
-first step:
-- sec. 17: completely rewritten
+- sec. 17: (not French and Japanese) completely rewritten
+- sec. 19.3: completely rewritten 
 
 
 For LyX 2.2.3:
-
 - sec. 17: (not French) new sentence
 
 

lib/examples/subequations.lyx

@@ -1,261 +0,0 @@
-#LyX 2.3 created this file. For more info see http://www.lyx.org/
-\lyxformat 544
-\begin_document
-\begin_header
-\save_transient_properties true
-\origin /systemlyxdir/examples/
-\textclass article
-\use_default_options true
-\begin_modules
-subequations
-\end_modules
-\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
-\use_microtype false
-\use_dash_ligatures false
-\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
-\use_minted 0
-\index Index
-\shortcut idx
-\color #008000
-\end_index
-\secnumdepth 3
-\tocdepth 3
-\paragraph_separation indent
-\paragraph_indentation default
-\is_math_indent 0
-\math_numbering_side default
-\quotes_style english
-\dynamic_quotes 0
-\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
-The 
-\family typewriter
-subequations
-\family default
- environment is provided in LyX by the 
-\family typewriter
-subequations
-\family default
- module (Document > Settings > Modules).
- It is helpful to group logically-linked equations.
- For example, the one-speed one-dimensional integro-differential equation
- with 
-\begin_inset Formula $0\le x\le X$
-\end_inset
-
- and 
-\begin_inset Formula $-1\le\mu\le1$
-\end_inset
-
- shown in Eq.
-\begin_inset space ~
-\end_inset
-
-
-\begin_inset CommandInset ref
-LatexCommand ref
-reference "eq:odoglbe"
-
-\end_inset
-
- has associated boundary conditions shown in Eqs.
-\begin_inset space ~
-\end_inset
-
-
-\begin_inset CommandInset ref
-LatexCommand ref
-reference "eq:rlbc"
-
-\end_inset
-
- and 
-\begin_inset CommandInset ref
-LatexCommand ref
-reference "eq:vrbc"
-
-\end_inset
-
-.
-\begin_inset Flex Subequations
-status open
-
-\begin_layout Plain Layout
-\begin_inset Formula 
-\begin{align}
-\mu\frac{d\psi\left(x,\mu\right)}{dx}+\Sigma_{t}\left(x\right)\psi\left(x,\mu\right) & =\intop_{-1}^{1}\frac{\Sigma_{s}\left(x,\mu'\to\mu\right)}{2}\psi\left(x,\mu'\right)d\mu'+\frac{Q\left(x,\mu\right)}{2},\label{eq:odoglbe}\\
-\psi\left(0,\mu\right) & =\psi\left(0,-\mu\right)\,,\,0<\mu\le1,\label{eq:rlbc}\\
-\psi\left(X,\mu\right) & =0\,,\,-1\le\mu<0.\label{eq:vrbc}
-\end{align}
-
-\end_inset
-
-
-\begin_inset CommandInset label
-LatexCommand label
-name "eq:odoglbeset_aligned"
-
-\end_inset
-
-
-\end_layout
-
-\end_inset
-
-
-\end_layout
-
-\begin_layout Standard
-In the previous case, the equations use the 
-\family typewriter
-amsmath
-\family default
- 
-\family typewriter
-align
-\family default
- environment; however, this is not necessary as shown in Eqs.
-\begin_inset space ~
-\end_inset
-
-
-\begin_inset CommandInset ref
-LatexCommand ref
-reference "eq:odoglbenoa"
-
-\end_inset
-
-–
-\begin_inset CommandInset ref
-LatexCommand ref
-reference "eq:vrbcnoa"
-
-\end_inset
-
-.
- 
-\begin_inset Flex Subequations
-status open
-
-\begin_layout Plain Layout
-\begin_inset Formula 
-\begin{equation}
-\mu\frac{d\psi\left(x,\mu\right)}{dx}+\Sigma_{t}\left(x\right)\psi\left(x,\mu\right)=\intop_{-1}^{1}\frac{\Sigma_{s}\left(x,\mu'\to\mu\right)}{2}\psi\left(x,\mu'\right)d\mu'+\frac{Q\left(x,\mu\right)}{2},\label{eq:odoglbenoa}
-\end{equation}
-
-\end_inset
-
-
-\begin_inset Formula 
-\begin{equation}
-\psi\left(0,\mu\right)=\psi\left(0,-\mu\right)\,,\,0<\mu\le1,\label{eq:rlbcnoa}
-\end{equation}
-
-\end_inset
-
-
-\begin_inset CommandInset label
-LatexCommand label
-name "eq:odoglbeset_individual"
-
-\end_inset
-
-
-\begin_inset Formula 
-\begin{equation}
-\psi\left(X,\mu\right)=0\,,\,-1\le\mu<0.\label{eq:vrbcnoa}
-\end{equation}
-
-\end_inset
-
-
-\end_layout
-
-\end_inset
-
-
-\end_layout
-
-\begin_layout Standard
-As an alternative to cross-referencing each subequation directly, the group
- of subequations (i.e., Eq.
-\begin_inset space ~
-\end_inset
-
-
-\begin_inset CommandInset ref
-LatexCommand ref
-reference "eq:odoglbeset_aligned"
-
-\end_inset
-
- and/or Eq.
-\begin_inset space ~
-\end_inset
-
-
-\begin_inset CommandInset ref
-LatexCommand ref
-reference "eq:odoglbeset_individual"
-
-\end_inset
-
-) can be referenced by placing a label within the subequation inset but
- outside the equation(s).
-\end_layout
-
-\end_body
-\end_document