#LyX 2.4 created this file. For more info see https://www.lyx.org/ \lyxformat 566 \begin_document \begin_header \save_transient_properties true \origin unavailable \textclass scrartcl \begin_preamble \end_preamble \options bibliography=totoc,index=totoc,BCOR7.5mm,titlepage,captions=tableheading \use_default_options false \maintain_unincluded_children false \language english \language_package default \inputencoding auto \fontencoding auto \font_roman "lmodern" "default" \font_sans "lmss" "default" \font_typewriter "lmtt" "default" \font_math "auto" "auto" \font_default_family default \use_non_tex_fonts true \font_sc false \font_osf false \font_sf_scale 100 100 \font_tt_scale 100 100 \use_microtype false \use_dash_ligatures true \graphics default \default_output_format pdf5 \output_sync 0 \bibtex_command default \index_command default \float_placement class \float_alignment class \paperfontsize 12 \spacing single \use_hyperref false \pdf_bookmarks true \pdf_bookmarksnumbered true \pdf_bookmarksopen true \pdf_bookmarksopenlevel 1 \pdf_breaklinks false \pdf_pdfborder false \pdf_colorlinks true \pdf_backref false \pdf_pdfusetitle false \papersize a4paper \use_geometry false \use_package amsmath 2 \use_package amssymb 2 \use_package cancel 0 \use_package esint 1 \use_package mathdots 1 \use_package mathtools 2 \use_package mhchem 1 \use_package stackrel 0 \use_package stmaryrd 0 \use_package undertilde 0 \cite_engine basic \cite_engine_type default \biblio_style plain \use_bibtopic false \use_indices false \paperorientation portrait \suppress_date false \justification false \use_refstyle 0 \use_minted 0 \notefontcolor #0000ff \index Index \shortcut idx \color #008000 \end_index \secnumdepth 4 \tocdepth 3 \paragraph_separation skip \defskip medskip \is_math_indent 0 \math_numbering_side default \quotes_style english \dynamic_quotes 0 \papercolumns 1 \papersides 2 \paperpagestyle plain \bullet 1 0 6 -1 \bullet 2 2 35 -1 \bullet 3 2 7 -1 \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 Section* Minimal failing example for Math.lyx \end_layout \begin_layout Standard Compiling \SpecialChar LyX 's detailed Math manual fails with non-TeX fonts due to missing characters. The documents uses the default set for LyX documentation: \emph on Latin Modern \emph default as text and \emph on Computer Modern \emph default for maths. \end_layout \begin_layout Standard There is no easy solution because of the nature of the Maths documentation: \end_layout \begin_layout Enumerate Changing only the text font results in a bad font mix — LyX documentation must not give a bad example/showcase. \end_layout \begin_layout Enumerate Changing the math font does not work for Math.lyx: \end_layout \begin_deeper \begin_layout Itemize Some of the documented packages and examples only work with the default math font (no \backslash maltese in \begin_inset Quotes eld \end_inset txmath \begin_inset Quotes erd \end_inset , package incompatibilities with unicode-math, ...). \end_layout \begin_layout Itemize Besides: support for most math fonts is of inferiour quality (missing optical sizes for indices, limited set of symbols) \end_layout \end_deeper \begin_layout Subsection* Missing characters with Latin Modern \end_layout \begin_layout Standard Excerpts from Math.lyx that lead to \begin_inset Quotes eld \end_inset missing character \begin_inset Quotes erd \end_inset errors and discussion of reasons and possible workarounds: \end_layout \begin_layout Quote Bold Formulas \end_layout \begin_layout Quote To make a complete formula bold, the command \series bold \backslash mathbf \series default from the previous subsection cannot be used, because it doesn't work for small Greek letters. Furthermore it prints Latin letters always upright, like in the following equation: \begin_inset Formula \[ \mathbf{\int_{n}^{2}f(\theta)=\Gamma}\qquad\textrm{equation with \textbackslash mathbf} \] \end_inset \end_layout \begin_layout Standard Capital Greek characters in \backslash mathbf lead to \begin_inset Quotes eld \end_inset missing character \begin_inset Quotes erd \end_inset errors with non-TeX fonts. Small Greek characters are not bolded, because TeX treats them as symbols, not letters (unless you load the package \emph on isomath \emph default or \emph on fixmath \emph default ). \end_layout \begin_layout Quote Accents in Text \end_layout \begin_layout Quote With the following commands all letters can be accented. The commands must be inserted in \SpecialChar TeX mode. \end_layout \begin_layout Quote \begin_inset Tabular \begin_inset Text \begin_layout Plain Layout Command \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout Result \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \backslash H \begin_inset space \textvisiblespace{} \end_inset e \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \begin_inset ERT status collapsed \begin_layout Plain Layout \backslash H e \end_layout \end_inset \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \backslash 'e \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \begin_inset ERT status collapsed \begin_layout Plain Layout \backslash 'e \end_layout \end_inset \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \backslash ~e \begin_inset Index idx status collapsed \begin_layout Plain Layout Tilde \end_layout \end_inset \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \begin_inset ERT status collapsed \begin_layout Plain Layout \backslash ~e \end_layout \end_inset \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \backslash .e \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \begin_inset ERT status collapsed \begin_layout Plain Layout \backslash .e \end_layout \end_inset \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \backslash v \begin_inset space \textvisiblespace{} \end_inset e \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \begin_inset ERT status collapsed \begin_layout Plain Layout \backslash v e \end_layout \end_inset \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \backslash d \begin_inset space \textvisiblespace{} \end_inset e \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \begin_inset ERT status collapsed \begin_layout Plain Layout \backslash d e \end_layout \end_inset \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \backslash c \begin_inset space \textvisiblespace{} \end_inset e \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \begin_inset ERT status collapsed \begin_layout Plain Layout \backslash c e \end_layout \end_inset \end_layout \end_inset \end_inset \end_layout \begin_layout Standard Accented characters missing in Latin Modern: \end_layout \begin_layout Quote \family typewriter \backslash c e \family default leads to \end_layout \begin_layout Quote Missing character: There is no \begin_inset Note Note status open \begin_layout Plain Layout ̧ \end_layout \end_inset (U+0327) in font [lmroman12-regular]:+tlig;! \end_layout \begin_layout Standard OTOH, examples for ERT commands to get accented text letters are not really helpfull in a \emph on mathematics \emph default documentation even when mathematical text can be (ab)used to get them. \end_layout \begin_layout Standard BTW: If keeping them, the following parts of Math.lyx should be corrected \end_layout \begin_layout Labeling \labelwidthstring 00 \noindent - The accents \series bold ` \series default , \series bold ' \series default and \series bold ^ \series default can in combination with vowels directly be inserted with the keyboard without using \SpecialChar TeX mode. The same applies for the tilde \begin_inset Foot status collapsed \begin_layout Plain Layout This only applies for keyboards where the tilde is defined as accent. \end_layout \end_inset \series bold ~ \series default in combination with \emph on a \emph default , \emph on n \emph default , or \emph on o \emph default . \end_layout \begin_layout Labeling \labelwidthstring 00 + If the keyboard defines them as \begin_inset Quotes eld \end_inset dead keys \begin_inset Quotes erd \end_inset , the accents \series bold ` \series default , \series bold ' \series default , ^, and ~ can in combination with supported characters directly be inserted with the keyboard without using \SpecialChar TeX mode. \end_layout \begin_layout Labeling \labelwidthstring 00 - The commands \series bold \backslash b \series default , \series bold \backslash c \series default , \series bold \backslash d \series default , \series bold \backslash H \series default , \series bold \backslash t \series default , \series bold \backslash u \series default , \series bold \backslash v \series default and accents that are inserted directly with the keyboard are also available in mathematical text. \end_layout \begin_layout Labeling \labelwidthstring 00 + Like any LaTeX commands, \series bold \backslash b \series default , \series bold \backslash c \series default , \series bold \backslash d \series default , \series bold \backslash H \series default , \series bold \backslash t \series default , \series bold \backslash u \series default , \series bold \backslash v \series default are available in mathematical text without the need to wrap them in a \begin_inset Quotes eld \end_inset TeX Code \begin_inset Quotes erd \end_inset (ERT) inset . \end_layout \begin_layout Labeling \labelwidthstring 00 - Example \backslash c e \end_layout \begin_layout Labeling \labelwidthstring 00 + Example \backslash c c or \backslash c s (converted to pre-composed character available in LatinModern). \end_layout \end_body \end_document