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math-mode Math Greek letters do not work for \MakeUppercase, \MakeLowercase. \documentclass{article} \begin{document} $\MakeUppercase{\alpha\beta\gamma}\MakeLowercase{\Gamma\Delta\Theta}$ \end{document}

Packages on CTAN are tagged according to their licence; this information is displayed on each package's page along with other basic metadata such as its name, version, maintainer, and topics. I know that I can browse or search for all packages assigned to a given topic using the topics index or using the extended search form. Is there any similarly easy way of finding all CTAN packages with a given licence? Here's what I've tried so far: I checked the master licence list, but if I click on one of the licences in the list, the page I'm taken to gives me only basic information about the licence and (in some cases) some statistics about the number of packages that use that licence. I checked the extended search form form. It doesn't have a dedicated field for the licence. If I do search for a licence name, then it returns only the individual licence pages described above, not the packages that use that licence. I checked the XML API and JSON API. They provide endpoints for listing all licences, and for listing all packages, but not for listing packages by licence. The entries returned by the "List of licenses" endpoints list only a unique ID, name, and free/non-free status for each licence, but not which packages use that licence. The entries returned by the "List of Packages" endpoints list only a unique ID, name, and brief description for that package, but not its licence. I could use the XML or JSON API to get a full list of packages, extract the unique IDs to construct the URL for each package's page on CTAN, download each of those pages, and then scrape the licence data. But there are currently almost 7000 packages, so scraping the site in this way will take a long time, and I'm not sure that the site operators would appreciate all that traffic. (My use case, in case anyone is wondering, is finding packages that are available on CTAN but that are not distributed with TeX Live due to licensing restrictions. I'm curious as to what sort of functionality I and other TeX Live users might be missing out on, and might decide to code freely licensed replacements for any seemingly useful non-free packages.)

A MWE is probably better than lengthy explanations: \documentclass[tikz,10pt]{standalone} \usetikzlibrary{positioning} % savedbox with a sketch \newsavebox{\sdbox} \sbox{\sdbox}{% \begin{tikzpicture}[scale=0.35] \node (rbox) [fill=red] at (1,0) {}; \node (bbox) [fill=blue] at (1,1) {}; \end{tikzpicture}% } \begin{document} \begin{tikzpicture}[scale=0.5,font=\small] % blocks \node (comp) {computer}; \node[right = 1cm of comp] (sb) {\usebox{\sdbox}}; % arrow \draw[->] (rbox) -- (comp); \end{tikzpicture} \end{document} Upon compilation, you'll notice that the arrow does not link the node (rbox) from its absolute position after the node (sb) is drawn, as it should go from the red rectangle to the computer box. Would it be possible to achieve that goal?

How do I directly input foreign scripts into LuaLaTeX equations? I'm using LuaLaTeX with the unicode-math package. I have text mode setup that uses fallback font for any glyphs not covered. I also want to do the same for math mode, but with different font choices. I'm currently unable to input a foreign script like Kanji and Thai without adding commands like \text{} around it, despite having fonts that support Kanji and Thai. I want to be able to input scripts like Kanji and Thai into equations without extra commands as long as I have the proper font for it. \documentclass{article} \usepackage{unicode-math} \directlua{ luaotfload.add_fallback ("textFallback", { "SimSun:mode=harf;", } ) } \setmainfont{Arial}[RawFeature={fallback=textFallback}] \setmathfont{Latin Modern Math} \begin{document} This is a sample text. この文章は日本語です。 $∀天∈ℝ, ∀ค∈ℝ, 天+ค∈ℝ$ \end{document} Edit: Added clarification and included the Thai script.

I'm a physics teacher and I'd like to share here my way to write "dynamical" exercises. After posting a couple of questions more or less related, I've read comments implying that my way of doing could be improved. When I say "dynamical" I mean that the variables of my problem (\mass, \speed, ...) are coded in the questions. I don't wanna hard-code for the following reasons: If I write everything with, say, m=3kg, and then I wanna change to m=2kg, I don't wanna rewrite everything. I can reuse the questions very fast with different values, e.g. for exams or for the students to practise. Below a MWE of a "typical" problem. Please, do not focus on the Physics, but on the LaTeX ideas, mainly: Could I improve the way I store variables and compute other quantities? For the units, which command should I use: mathrm; text ; textup; ... ? Anything else? I want to make clear that, even if in this example I use basic maths (mainly the 4 operations), I typically need all the usual fonctions (powers, log, sqrt, exp, trigo), so any solution that you suggest should handle all these functions. \documentclass{article} \usepackage{xfp} % provides \fpeval \usepackage{amsmath} \begin{document} \def\mass{3} \def\speed{10} \def\distance{1} \edef\Ekin{\fpeval{0.5*\mass*\speed^2}} \edef\force{\fpeval{0.5*\mass*\speed^2/\distance}} A mass $m=\mass\, \mathrm{kg}$ starts moving from rest. After a distance $d=\distance\, \textup{m}$ its velocity is $\speed\, \text{m} \times \text{s}^{-1}$\,. Compute the force. \vspace{5cm} Solution First you compute the kinetic energy $$ E=\frac 12 mv^2 = \Ekin\, \mathrm{J} $$ blabla more details, more equations, blablabla Use the work theorem to find $$ F=\frac{mv^2}{2d} = \force\, \mathrm{N}\,. $$ \end{document} Community Edit: Current output

I found a section formatting style on TeX Stack Exchange that I really like. The only issue is that it applies the same formatting to sections, subsections, and subsubsections, whereas I would like a clearer hierarchy with sections having boxed number + colored underline; subsections having colored number + underline; subsubsections having colored number and text (no underline). My current implementation is below. It mostly works, but for some reason, there is a gap in the underline between the section number box and the title. I am using titlesec and ulem for the underlining. \documentclass{article} % === Required packages === \RequirePackage[explicit]{titlesec} \RequirePackage{soul} \RequirePackage{xcolor} \definecolor{titlepagecolor}{rgb}{.13, .36, .38} % === Underline helper === \newbox\TitleUnderlineTestBox \newcommand*\TitleUnderline[1]{% \bgroup \setbox\TitleUnderlineTestBox\hbox{\colorbox{titlepagecolor}\strut}% \setul{\dimexpr\dp\TitleUnderlineTestBox-.3ex\relax}{.3ex}% {\color{titlepagecolor}\ul{\mbox{#1}}}% \egroup } % === (sub)Section numbers === \newcommand*\SectionNumberBox[1]{% \colorbox{titlepagecolor}{% \makebox[2.5em][c]{% \color{white}\strut\csname the#1\endcsname }% }% \hspace{0.5em}% } \newcommand*\SubsectionNumberColored{% {\color{titlepagecolor}\thesubsection}% } % === Section === \titleformat{\section} {\Large\bfseries\sffamily\color{titlepagecolor}} {\SectionNumberBox{section}} {0pt} {\TitleUnderline{#1}} % === Subsection === \titleformat{\subsection} {\large\bfseries\sffamily} {} {0pt} {% \TitleUnderline{% \SubsectionNumberColored\hspace{0.8em}#1% }% } % === Subsubsection === \titleformat{\subsubsection} {\normalsize\bfseries\sffamily} {} {0pt} {\textcolor{titlepagecolor}{\thesubsubsection\hspace{0.8em}#1}} \begin{document} \section{Section} \subsection{Subsection} \subsubsection{Subsubsection} \end{document}

The Bibliography chapter name is visible but there are no bibliography entries. I have checked the bibtex file carefully and it is there in the folder containing BibTeX entries. What should I change in the code? \documentclass[a4paper,12pt,english,oneside]{book} \setcounter{tocdepth}{3} \setcounter{secnumdepth}{4} \usepackage[T1]{fontenc} \usepackage{imakeidx} \usepackage[utf8]{inputenc} \usepackage[a4paper,left=1in,right=1in,top=1in,bottom=1in,bindingoffset=0.5in]{geometry} \usepackage{graphicx} \usepackage{import} \usepackage{verbatim} \usepackage{amsmath} \usepackage{afterpage} \usepackage{dashrule} \usepackage{amsmath,amssymb,amsfonts,amsthm} \usepackage{algorithmic} \usepackage[ruled,vlined]{algorithm2e} \usepackage{multirow} \usepackage{comment} \usepackage{array} \usepackage{ragged2e} \usepackage{type1cm} \usepackage{enumitem} \usepackage{pifont} \usepackage{dirtytalk} \usepackage{epigraph} \usepackage{setspace} \usepackage{indentfirst} \usepackage[super]{nth} \usepackage{enumitem} \usepackage{caption} \usepackage{lipsum} \usepackage{tikz} \usepackage{tikz-cd} \usepackage[all]{xy} \usetikzlibrary{cd} \usetikzlibrary{shapes,arrows,positioning} \setlength{\headheight}{15pt} \makeindex[columns=2, title=Index, intoc, options=-s mystyle.ist] \newcommand{\nomunit}[1]{% \renewcommand{\nomentryend}{\hspace*{\fill}#1}} %---------------------------------------------- % ******** PDF, URL AND HYPERLINK PACKAGES ********* % \usepackage{url} \usepackage[dvipsnames]{xcolor} \usepackage{indentfirst} \usepackage{hyperref} \hypersetup{colorlinks=false} % ************* DROPCAP PACKAGE ******************** % \usepackage{type1cm} \usepackage{lettrine} \setlength{\DefaultNindent}{0pt} \setlength{\DefaultFindent}{3pt} \setcounter{DefaultLines}{2} \renewcommand{\LettrineTextFont}{\rmfamily} \renewcommand{\LettrineFontHook}{\fontfamily{ptm}} %---------------------------------------------- %***************** GRAPHICS PACKAGES AND COMMANDS **************% \usepackage{float} \usepackage{subfigure} \usepackage{multicol} \newcolumntype{R}[1]{>{\centering\let\newline\\\arraybackslash\hspace{0pt}}m{#1}} % ****************** Chapter Title header *************************** \usepackage{fancyhdr} \pagestyle{fancy} \fancyhf{} \fancyhead[L]{\nouppercase{\footnotesize\leftmark}} \fancyhead[C]{} \fancyhead[R]{} \renewcommand{\headrulewidth}{0.1pt} \cfoot{\thepage} \usepackage[explicit]{titlesec} \usepackage[style=numeric,backend=biber,sorting=nyt]{biblatex} \addbibresource{Bibliography.bib} %\titleformat*{\subsubsection}{\normalfont\normalsize\bfseries\color{Sepia}} % **************Theorem Environments ************************* \renewcommand{\baselinestretch}{1.2} \setlength{\oddsidemargin}{.2cm} \setlength{\evensidemargin}{.2cm} \topmargin -1.4cm \theoremstyle{plain} \newtheorem{theorem}{Theorem}[section] \newtheorem{lemma}[theorem]{Lemma} \newtheorem{proposition}[theorem]{Proposition} \newtheorem{conjecture}[theorem]{Conjecture} \newtheorem{result}[theorem]{Result} \newtheorem{corollary}[theorem]{Corollary} \theoremstyle{definition} \newtheorem{definition}[theorem]{Definition} \newtheorem{observation}[theorem]{Observation} \newtheorem{observations}[theorem]{Observations} \newtheorem{definitions}[theorem]{Definitions} \newtheorem{example}[theorem]{Example} \newtheorem{examples}[theorem]{Examples} \newtheorem{remark}[theorem]{Remark} \newtheorem{remarks}[theorem]{Remarks} \newtheorem{notation}[theorem]{Notations} \newtheorem{note}[theorem]{Note} \newtheorem{notes}[theorem]{Notes} \newtheorem{ques}[theorem]{Question} \renewcommand{\thefootnote}{} %**************** BEGIN DOCUMENT *********************% % \begin{document} %***************** FRONT MATTER *****************% \pagestyle{empty} \import{FRONT MATTER/}{PAGE01-Title_Page} %\blankpage \import{FRONT MATTER/}{PAGE02-Certificate_from_Supervisors} \newpage \import{FRONT MATTER/}{PAGE03-Author declaration} \newpage \import{FRONT MATTER/}{PAGE04-Dedication} \clearpage %-------------------------------------------------- %************* NUMBERED FRONT PAGES ************% \frontmatter \pagestyle{plain} \pagenumbering{roman} \setcounter{page}{1} \singlespacing \phantomsection \addcontentsline{toc}{chapter}{Acknowledgements} \import{FRONT MATTER/}{PAGE05-Acknowledgement} \clearpage \phantomsection \addcontentsline{toc}{chapter}{Abstract} \import{FRONT MATTER/}{PAGE06-Abstract} \clearpage \onehalfspacing \phantomsection \addcontentsline{toc}{chapter}{List of Research Papers} \import{FRONT MATTER/}{List of publications} \clearpage \singlespacing \tableofcontents %---------------------------------------------------- %***************** CHAPTER_1 **********************% \mainmatter \pagenumbering{arabic} \pagestyle{fancy} \fancyhf{} \fancyfoot[C]{\thepage} \fancyhead[LE,RO]{Chapter 1: Introduction} % Change Chapter Heading here \renewcommand{\headrulewidth}{1pt} \onehalfspacing \include{CHAPTERS/Chapter1} % Change Chapter Number here \clearpage %---------------------------------------------------- %***************** CHAPTER_2 **********************% \pagestyle{fancy} \fancyhf{} \fancyfoot[C]{\thepage} \fancyhead[LE,RO]{Chapter 2: Preliminaries} % Change Chapter Heading here \renewcommand{\headrulewidth}{1pt} \onehalfspacing \include{CHAPTERS/Chapter2} % Change Chapter Number here \clearpage %\csname @openrightfalse\endcsname %---------------------------------------------------- %***************** CHAPTER_3 **********************% \pagestyle{fancy} \fancyhf{} \fancyfoot[C]{\thepage} \fancyhead[LE,RO]{Chapter 3: Running title} % Change Chapter Heading here \renewcommand{\headrulewidth}{1pt} \onehalfspacing \include{CHAPTERS/Chapter3} % Change Chapter Number here \clearpage %---------------------------------------------------- %***************** CHAPTER_4 **********************% \pagestyle{fancy} \fancyhf{} \fancyfoot[C]{\thepage} \fancyhead[LE,RO]{Chapter 4: Running title} % Change Chapter Heading here \renewcommand{\headrulewidth}{1pt} \onehalfspacing \include{CHAPTERS/Chapter4} % Change Chapter Number here \clearpage %---------------------------------------------------- %***************** CHAPTER_5 **********************% \pagestyle{fancy} \fancyhf{} \fancyfoot[C]{\thepage} \fancyhead[LE,RO]{Chapter 5: On Singquandle Shadows} % Change Chapter Heading here \renewcommand{\headrulewidth}{1pt} \onehalfspacing \include{CHAPTERS/Chapter5} % Change Chapter Number here \clearpage %---------------------------------------------------- %***************** CHAPTER_6 **********************% \pagestyle{fancy} \fancyhf{} \fancyfoot[C]{\thepage} \fancyhead[LE,RO]{Chapter 6: Categorical interplay in Singquandles} % Change Chapter Heading here \renewcommand{\headrulewidth}{1pt} \onehalfspacing \include{CHAPTERS/Chapter6} % Change Chapter Number here \clearpage %---------------------------------------------------- %***************** CHAPTER_7 **********************% \pagestyle{fancy} \fancyhf{} \fancyfoot[C]{\thepage} \fancyhead[LE,RO]{Chapter 7: Conclusions and Remarks} % Change Chapter Heading here \renewcommand{\headrulewidth}{1pt} \onehalfspacing \include{CHAPTERS/Chapter7} % Change Chapter Number here \clearpage %---------------------------------------------------- %***************** BIBLIOGRAPHY **********************% \pagestyle{fancy} \fancyhf{} \fancyfoot[C]{\thepage} \fancyhead[LE,RO]{Bibliography} \renewcommand{\headrulewidth}{1pt} \printbibliography \clearpage \pagestyle{fancy} \fancyhf{} \fancyfoot[C]{\thepage} \fancyhead[LE,RO]{Index} \renewcommand{\headrulewidth}{1pt} \printindex \end{document}

In my table, column heads are in shade and the text should be in white color, and the table body have alternative shades, I've try with: \documentclass{article} \usepackage{tabularx} \usepackage[table]{xcolor} \begin{document} \newcommand{\colhead}[1]{\color{white}#1} \newcolumntype{P}[1]{>{\raggedright\arraybackslash}p{#1}}% \def\toprule{\rowcolor{black!70}} \def\midrule{\relax} \rowcolors{0}{black!10}{black!20}% \arrayrulecolor{white} \setlength{\arrayrulewidth}{1pt} \begin{table} \caption{Party identification, by social characteristics, 2024} \begin{tabularx}{\textwidth}{ P{50pt}| P{45pt}|X|X|X|X|X|X|} \toprule \colhead{Category (Percentage of Sample)} &\multicolumn{2}{X}{\colhead{Democrats}} &\multicolumn{3}{X}{\colhead{Independents}} &\multicolumn{2}{X}{\colhead{Republicans}}\\ \toprule \colhead{} & \colhead{Strong} & \colhead{Weak} & \colhead{Lean Dem} & \colhead{Pure} & \colhead{Lean Rep} & \colhead{Weak} & \colhead{Strong}\\ \hline \midrule Men\index{Men} (48) & 20 & 9 & 17 & 5 & 20 & 10 & 19\\ \hline Women\index{Women} (52) & 24 & 16 & 16 & 6 & 13 & 9 & 16\\ \hline Whites (72) & 21 & 10 & 12 & 6 & 14 & 12 & 26\\ \hline \end{tabularx} \end{table} \end{document} when \multicolumn comes, shades for column heads not coming properly: Please advise.

As shown by the following MCE, escaped \pause works well in listings' lstlisting but not in tcolorbox' tcblisting: with the latter, what should appear only from the 4th slide: appears on the 2nd, disappears on the 3rd, reappears on the 4th. How to fix this issue? \documentclass[t]{beamer} \usepackage{listings} \usepackage{tcolorbox} \lstset{% basicstyle=\ttfamily, escapeinside=@\ , escapebegin=\pause{}\$\ , } \tcbuselibrary{listings} \begin{document} \begin{frame}[fragile]{lstlisting: OK (slide number : \insertslidenumber)} Foo \pause{} Bar \begin{lstlisting} @ bar \end{lstlisting} \pause{} Baz \end{frame} \begin{frame}[fragile]{tcblisting: not OK (slide number : \insertslidenumber)} Foo \pause{} Bar \begin{tcblisting}{listing only} @ bar \end{tcblisting} \pause{} Baz \end{frame} \end{document}

This post comes from my previous solution, then I simplified them: \documentclass{article} \usepackage{showframe} \usepackage[tikz]{overarrows} \usetikzlibrary{decorations.markings} \NewOverArrowCommand[tikz]{\underarrowA}{% add tikz options={line cap=round,decoration={markings,mark=at position 0.5 with {\draw[-](-1pt,-1pt)--(1pt,1pt);\draw[-](-1pt,1pt)--(1pt,-1pt);}}}, add path options={postaction={decorate}}, arrows={->[scale=0.5]}, path = {(0,0) -- (1,0)}, center arrow, arrow under, min length=15, space after arrow=0.4ex, } \NewOverArrowCommand[tikz]{\underarrowC}{% path options={arrows={<[scale=0.5]->[scale=0.5]}},% path={% (0,0) -- (0.5,0) to[loop below,in=-45,out=225,min distance=4mm,every loop/.style={}] (0.5,0) -- (1,0) }, center arrow, arrow under, min length=15, space after arrow=0.4ex, } \setlength{\parindent}{0pt} \setlength{\fboxsep}{0pt} \usepackage{lipsum} \begin{document} $\underarrowA{v} \qquad \underarrowA{vvv} \qquad \underarrowA{ABCD} $ $\underarrowC{v} \qquad \underarrowC{vvv} \qquad \underarrowC{ABCD} $ \fbox{$A\underarrowA{v}B$} \fbox{$A\underarrowC{v}B$} \bigskip \end{document} We could see from the above that the bounding box of arrowC is larger than expected. I wonder whether there are good suggesion to refine this?

I am generating a plot in PGFPlots/TikZ where the x-axis contains string values and the y-axis contains numerical data. The data is imported from a CSV file, and everything works correctly so far. However, when I use skip coordinates between index, the filtering is applied to the y-values and not to the x-axis categories. In this case, I want to draw only the data with the string value B. Is there a way to correctly apply this filtering to both x-axis ? Thanks! Here is the MWE. Keep in mind that in my case the data are extract from csv file. \documentclass{article} \usepackage{pgfplots} \usepackage{pgfplotstable} \pgfplotsset{compat=1.18} \pgfplotstableread{ String Value A 0 A 6 A 4 B 9 B 5 B 1 B 3 B 7 C 4 C 7 C 9 C 3 }\data \begin{document} \begin{tikzpicture} \begin{axis}[ ybar, ymin=0, xtick=data, xticklabels from table={\data}{String}, nodes near coords ] \addplot table[ x expr=\coordindex, y={Value}, skip coords between index={0}{3}, skip coords between index={8}{100} ]{\data}; \end{axis} \end{tikzpicture} \end{document}

I have customized a MyReport.cls file with a custom optional parameter "Reference", which functions as follows: It defaults to None. If the user passes a bib file path via \documentclass[Reference={ref.bib}]{MyReport}, then execute: \RequirePackage[hyperref=true,backend=biber,url=false,doi=false,sorting=none,style=gb7714-2015]{biblatex} \AtBeginDocument{\addbibresource{ref.bib}} \AtEndDocument{\printbibliography[heading=bibintoc]} How can I implement this feature? Here is the MyReport.cls \NeedsTeXFormat{LaTeX2e} \RequirePackage{expl3} \ProvidesClass{MyReport}[2024/01/01 v1.0.0 My custom report class] \def\xjtuthesis{MyReport} \def\meta@version{1.0.0} \def\metaversion{\meta@version} \newcommand{\MyReport@bibfile}{} \DeclareOption{Reference}{ \renewcommand{\MyReport@bibfile}{#1} } \ProcessOptions\relax \LoadClass[twoside]{article} \RequirePackage[zihao=-4]{ctex} \RequirePackage[a4paper,left=2.54cm,right=2.54cm,top=3.18cm,bottom=3.18cm]{geometry} \RequirePackage[hidelinks,bookmarksnumbered=true]{hyperref} \makeatletter \ifx\MyReport@bibfile\@empty % do nothing \else \RequirePackage[hyperref=true,backend=biber,url=false,doi=false,sorting=none,style=gb7714-2015]{biblatex} \AtBeginDocument{\addbibresource{\MyReport@bibfile}} \AtEndDocument{ \clearpage \printbibliography[heading=bibintoc] } \fi \makeatother and the below is the main.tex \documentclass[Reference={ref.bib}]{MyReport} \begin{document} \section{test} text\cite{Deb2014} \end{document} the ref.bib: @article{Deb2014, title = {An {{Evolutionary Many-Objective Optimization Algorithm Using Reference-Point-Based Nondominated Sorting Approach}}, {{Part I}}: {{Solving Problems With Box Constraints}}}, shorttitle = {An {{Evolutionary Many-Objective Optimization Algorithm Using Reference-Point-Based Nondominated Sorting Approach}}, {{Part I}}}, author = {Deb, Kalyanmoy and Jain, Himanshu}, date = {2014-08}, journaltitle = {IEEE Transactions on Evolutionary Computation}, shortjournal = {IEEE Trans. Evol. Computat.}, volume = {18}, number = {4}, pages = {577--601}, issn = {1089-778X, 1089-778X, 1941-0026}, doi = {10.1109/TEVC.2013.2281535}, url = {http://ieeexplore.ieee.org/document/6600851/}, urldate = {2025-11-08}, langid = {english} } No matter how I try, although the compilation does not report an error, it prompts: LaTeX: Unused global option(s): [Reference]. LaTeX: Empty bibliography. In fact, there is no "References" section, as if the operation to generate the references was not executed. How can I solve this problem? Note: \documentclass{MyReport} \addbibresource{ref.bib} \begin{document} \section{test} text\cite{Deb2014} \printbibliography[heading=bibintoc] \end{document} This main.tex can be compiled successfully, indicating that the basic functionalities of ref.bib and MyReport.cls are correct.

The following latex-code throws a ! Missing } inserted error. Please help me to find the reason. Minimal example: \documentclass{article} \usepackage{amsmath,amsfonts} \usepackage[executable=python.exe]{pyluatex} \newcommand\Zn{\mathbb{Z}_n} \begin{document} \begin{pythonq} from sympy import gcd a = 221 b = 39 r = a%b q = int((a-r)/b) mggt = gcd(a,b) \end{pythonq} \[ \begin{align*} \exists_{k\in\Zn} \quad \py{a} &= k\cdot t \\ \exists_{l\in\Zn} \quad \py{b} &= l\cdot t \\ \Rightarrow \quad \py{a}-\py{b} &= kt-lt = t\cdot \underbrace{(k-l)}_{\in\Zn} \end{align*} \] \end{document}

Although you can draw \int extended parts "\qsymb" in Tikz, it doesn't fit when zoomed in with math-mode. \documentclass{article} \usepackage{tikz} \usepackage{graphicx} \usepackage{amsmath} \usepackage[margin=0.5in]{geometry} \newcommand{\qsymb}{% \mathbin{ \vcenter{\hbox{ \scalebox{0.075}{ \begin{tikzpicture}[line width=2.5pt, line cap=round, line join=round, yscale=0.6] \draw (0.2, 2.4) -- (2.7, 3.9) -- (4.7, 2.9) -- (2.2, 1.4) -- cycle; \draw (2.2, 1.4) -- (4.2, 0.4) -- (1.7, -0.6) -- (-0.3, 0.4) -- cycle; \end{tikzpicture}% }% }}% }% } \newcommand{\qint}{\int\!\!\!\!\!\!\!\!\qsymb} \newcommand{\qiint}{\iint\!\!\!\!\!\!\!\!\!\!\qsymb} \begin{document} $A \qint B \qiint C$\\ $$A \qint B \qiint C$$ \end{document}

I found that using it this way doesn't result in the same subscript and superscript positions as \sum, and it's even crooked, which is really undesirable. % Source - https://tex.stackexchange.com/a/689279 % Posted by egreg % Retrieved 2026-06-10, License - CC BY-SA 4.0 % Code modified by: @mathrm alpha \documentclass{article} \usepackage{amsmath,graphicx} \makeatletter \NewDocumentCommand{\flippedsum}{e{_^}}{% \mathop{\mathpalette\flippedsum@{{#1}{#2}}}% } \NewDocumentCommand{\flippedsum@}{mm}{% \flippedsum@@#1#2% } \NewDocumentCommand{\flippedsum@@}{mmm}{% \begingroup \sbox\z@{$\m@th#1\sum$}% \reflectbox{\usebox\z@}% \IfValueT{#2}{% subscript _{#2}% }% \IfValueT{#3}{% superscript ^{\kern-\ifx#1\displaystyle0.5\else0.4\fi\wd\z@#3}% }% \endgroup } \makeatother \begin{document} \[ \flippedsum_a^b \] \begin{center} $\flippedsum_a^b$\\ $\scriptstyle\flippedsum_a^b$\\ $\scriptscriptstyle\flippedsum_a^b$ \end{center} \end{document} References: Superscript horizontal alignment on flipped integral symbol

This old code used to compile OK. \documentclass[12pt]{article} \usepackage{amsmath} \begin{document} Substituting $\sqrt{-x}$ in first equation gives% \begin{align} y-e^{\frac{\sqrt{-x}}{-x-x}} & =0\nonumber\\ y & =e^{\frac{\sqrt{-x}}{-2x}}\nonumber\\ \ln y & =\frac{\sqrt{-x}}{-2x}\nonumber\\ \left( \ln y\right) ^{2} & =\frac{-x}{4x^{2}}\nonumber\\ 4x\left( \ln y\right) ^{2}+1 & =0\nonumber\\ y_{s} & =\left\{ \begin{array} [c]{c}% e^{\frac{-i}{2\sqrt{x}}}\\ e^{\frac{i}{2\sqrt{x}}}% \end{array} \right. \tag{4}% \end{align} \end{document} Compiling gives no error: >lualatex 9.tex This is LuaHBTeX, Version 1.24.0 (TeX Live 2026) restricted system commands enabled. (./9.tex LaTeX2e <2025-11-01> L3 programming layer <2026-03-20> (/usr/local/texlive/2026/texmf-dist/tex/latex/base/article.cls Document Class: article 2025/01/22 v1.4n Standard LaTeX document class ... Output written on 9.pdf (1 page, 73469 bytes). Transcript written on 9.log. > But when changing preamble to this \usepackage{amsmath} \usepackage{autobreak} %added this with no code change at all, Now lualatex gives error >lualatex 9.tex This is LuaHBTeX, Version 1.24.0 (TeX Live 2026) restricted system commands enabled. (./9.tex LaTeX2e <2025-11-01> L3 programming layer <2026-03-20> (/usr/local/texlive/2026/texmf-dist/tex/latex/base/article.cls Document Class: article 2025/01/22 v1.4n Standard LaTeX document class (/usr/local/texlive/2026/texmf-dist/tex/latex/base/size12.clo)) (/usr/local/texlive/2026/texmf-dist/tex/latex/amsmath/amsmath.sty For additional information on amsmath, use the `?' option. (/usr/local/texlive/2026/texmf-dist/tex/latex/amsmath/amstext.sty (/usr/local/texlive/2026/texmf-dist/tex/latex/amsmath/amsgen.sty)) (/usr/local/texlive/2026/texmf-dist/tex/latex/amsmath/amsbsy.sty) (/usr/local/texlive/2026/texmf-dist/tex/latex/amsmath/amsopn.sty)) (/usr/local/texlive/2026/texmf-dist/tex/latex/autobreak/autobreak.sty (/usr/local/texlive/2026/texmf-dist/tex/generic/catchfile/catchfile.sty (/usr/local/texlive/2026/texmf-dist/tex/generic/infwarerr/infwarerr.sty) (/usr/local/texlive/2026/texmf-dist/tex/generic/ltxcmds/ltxcmds.sty) (/usr/local/texlive/2026/texmf-dist/tex/generic/etexcmds/etexcmds.sty (/usr/local/texlive/2026/texmf-dist/tex/generic/iftex/iftex.sty)))) (/usr/local/texlive/2026/texmf-dist/tex/latex/l3backend/l3backend-luatex.def) (./9.aux) ! Missing # inserted in alignment preamble. <to be read again> \cr l.22 \end{align} ? Notice there is no usage of the autobreak command in code. Only loading the package itself causes this error. Is this supposed to happen? Or is this a bug? TL 2026 on Linux ps. please do not complain about the code itself. It is auto-generated by external software.

I want to change the arrow style of NPN when I use circuiTikz. I read the manual of CircuiTikz. All I found is that: I can only change the arrow position in 4.15.5.2 \ctikzset{transistors/arrow pos=end} It do change the position of arrow. Then, I tried to change the arrow style. I tried the following ways: \draw (7, 0) node[npn, scale=2.0, flow arrow/.style={->, >=Stealth}] (T) {}; \ctikzset{bipoles/npn/arrow/.style={>=Stealth}} None works! Could you kindly give me a solution? Thanks!

I'm trying to use the multicol package (with multicolrule) inside a tcolorbox environment, to have two columns separated by a vertical line. While using it gives me the two columns, the vertical line in between them doesn't show. It works fine when I'm outside of the theorem. I know I could do it using another package like tabular or something similar, but I'd really like to make it work with multicol. Is there a way to force that line to appear? \documentclass[12pt,a4paper]{article} \usepackage{multicol} \usepackage{multicolrule} \usepackage{tcolorbox} \begin{document} \begin{tcolorbox} Inside the tcolorbox environment: \begin{multicols}{2}\SetMCRule{width=1pt, color=blue} No vline in between, \\ the two columns here. \end{multicols} \end{tcolorbox} Outside of the tcolorbox: \begin{multicols}{2}\SetMCRule{width=1pt, color=blue} The vline is here,\\ when I use it outside. \end{multicols} \end{document}

I am trying to understand how this recent package pst-hyperboloid and how its commands are implemented. I compile my document using LuaLaTeX, but I encounter an error message during compilation. In addition, the compilation time is very long. I would like to understand how to reduce compilation time and prevent or properly debug these errors. Extended graphic state modifications dropped since LaTeX support is not loaded. Insert \DocumentMetadata{} as first line of your document to solve this issue. \documentclass{article} \usepackage{pst-hyperboloid,pst-solides3d} \begin{document} \begin{pspicture}(-6,-6)(6,6) \psset{viewpoint=60 25 20 rtp2xyz,lightsrc=viewpoint,Decran=60} \psHyperboloid[ R=2, h=4, ngrid=40 20, hollow, incolor=black!10, fillcolor=black!25, linecolor=black, linewidth=0.2\pslinewidth ] \gridIIID[Zmin=-5,Zmax=5](-4,4)(-4,4) \end{pspicture} \end{document}

With TeX Live 2024 cleveref can compress cross-references including subequations parent numbers, like so: \documentclass{article} \usepackage{amsmath} \usepackage{cleveref} \begin{document} \begin{subequations}\label{eqn:one} \begin{align} a\label{eqn:onea}\\ b\label{eqn:oneb} \end{align} \end{subequations} \begin{align} c\label{eqn:two}\\ d\label{eqn:three} \end{align} \cref{eqn:one,eqn:two,eqn:three} \end{document} The \cref command gives as desired eqs. (1) to (3) However, with TeX Live 2025 and 2026, the compression does not occur and I get eqs. (1), (2) and (3) Is there a way to obtain the compressed output with TeX Live 2025 and 2026, without explicitly requiring a range (e.g., with \crefrange)? (This question is similar to this one, but the answer seems to indicate that I shouldn't get the compressed output with TeX Live 2024, which I do.)

Whereas it used to compile smoothly until some weeks ago (and with e.g. pdfTeX 3.141592653-2.6-1.40.27), the following MCE: \documentclass{article} \usepackage{thmtools} \newcounter{mycounter} \declaretheorem[ sharenumber=mycounter ]{theorem}[] \begin{document} \end{document} doesn't compile anymore with an up to date TeX Live 2026. Note that it still compiles if sharenumber=mycounter is commented. The compile fails with pdfTeX, Version 3.141592653-2.6-1.40.29 and: article.cls 2025/01/22 v1.4n Standard LaTeX document class size10.clo 2025/01/22 v1.4n Standard LaTeX file (size option) thmtools.sty 2023/05/04 v0.76 thm-patch.sty 2023/05/04 v0.76 parseargs.sty 2023/05/04 v0.76 thm-kv.sty 2023/05/04 v0.76 keyval.sty 2026-05-17 v1.15 key=value parser (DPC) kvsetkeys.sty 2022-10-05 v1.19 Key value parser (HO) thm-autoref.sty 2023/05/04 v0.76 aliasctr.sty 2023/05/04 v0.76 thm-listof.sty 2023/05/04 v0.76 thm-restate.sty 2023/05/04 v0.76 l3backend-luatex.def 2026-02-18 L3 backend support: PDF output (LuaTeX)

I'm teaching maths and I'd like to use a good package to write questions and answers, with the option to printout the answer at the end of the document. I've seen there are various such packages (exesheets, xsim, ...) and I'd like to know if one is considered "better" than the others. More specifically, I'd like a package with: A way to have questions and subquestions A command to store solutions and print them at the end of the document. If possible the name of the command should be different as "solution" as I already defined a command with this name, I would like to avoid changing all my codes. Edit : I would like to be able to define solutions that automatically get updated. The exercise package is a good start, but what I want is a way to make Answer dynamical. Here is a MWE, and I would like to define \addtotemporarysolution and \dumpsolutions (or anything else) to get what I wrote in the Answers environments. So far I have not found any way to "temporary" store the solutions (all my \sum in the first question) and dump them in the next Answer environment. To be more precise, in my MWE, I would be able to: add more additions, change the order of the additions, remove an addition, change the values of some \xand some \y, etc. and the \Answer environment should automaticaly update and display the solution of all the questions after modification. Note: I know my code is far from perfect, and maybe I should not use \defand \edef but that's not what I want/need to discuss now. \documentclass{article} \usepackage{xfp} \usepackage{enumerate} \usepackage{enumitem} \usepackage[answerdelayed]{exercise} \newcommand\addtotemporarysolution{XXX}%Todefine \newcommand\dumpsolutions{XXX}%Todefine \begin{document} \begin{Exercise} In this problem we study additions. \begin{enumerate}[label = \alph*)] \def\x{1}\def\y{1} \edef\sum{\fpeval{\x+\y}} \item Compute $\x+\y$ %\addtotemporarysolution{\sum} %To uncomment \def\x{10}\def\y{20} \edef\sum{\fpeval{\x+\y}} \item Compute $\x+\y$ %\addtotemporarysolution{\sum}%To uncomment \end{enumerate} \end{Exercise} \begin{Answer} %\dumpsolutions would put all the solutions defined in the previous Exercise I want here to write something that get dynamically updated. If I add another addition, or if I change the order, the answers should automatically change, without me to write anything. In this case, this would appear: \begin{enumerate} \item $2$ \item $30$ \end{enumerate} \end{Answer} \begin{Exercise} Now we study multiplications. \begin{enumerate}[label = \alph*)] \def\x{10}\def\y{20} \edef\product{\fpeval{\x*\y}} \item Compute $\x\times \y$ %\addtotemporarysolution{\product} %To uncomment \def\x{4}\def\y{8} \edef\sum{\fpeval{\x* \y}} \item Compute $\x\times \y$ %\addtotemporarysolution{\sum}%To uncomment \end{enumerate} \end{Exercise} \begin{Answer} %\dumpsolutions would put all the solutions defined in the previous Exercise I want here to write something that get dynamically updated. If I add another addition, or if I change the order, the answers should automatically change, without me to write anything. In this case, this would appear: \begin{enumerate} \item $200$ \item $32$ \end{enumerate} \end{Answer} \vspace{3cm} \textbf{Here are the solutions} \vspace{0.5cm} \shipoutAnswer \end{document} Community Edit: Here's a screeshot from the compiled code, marking the "1+1" example mentioned in this comment:

Example of rotated Khitan text on a web page: Image Source: https://www.babelstone.co.uk/Fonts/KhitanSmall.html Font: https://fonts.google.com/noto/specimen/Noto+Serif+Khitan+Small+Script But it seems LaTeX can't output rotated Khitan text. There is no command rotated Khitan text format in LaTeX. \documentclass{article} \usepackage{xeCJK} \setCJKmainfont{NotoSerifKhitanSmallScript-Regular.ttf} \xeCJKDeclareCharClass{CJK}{"18B00 -> "18CD5} \begin{document} 𘬐𘬑𘬒 Doesn't type rotated Khitan text \end{document} References: How can xeCJK expand its support to include "new standard Unihan characters"? Unicode PDF: https://www.unicode.org/charts/PDF/U18B00.pdf

Consider this MWE \documentclass[12pt]{article} \usepackage{amsmath} \usepackage{autobreak} \begin{document} \begin{align*} \begin{autobreak} A= (x + a + b +c+d+e+f+g) +y +z +(x + a + b +c+d+e+f+g) +e +d \end{autobreak} \end{align*} \end{document} Compile with lualatex gives I do not know how to make the output something like this (*), i.e. shift second and the rest of the lines more to the left. Using \MoveEqLeft from mathtools made it worst \documentclass[12pt]{article} \usepackage{amsmath} \usepackage{autobreak} \usepackage{mathtools} %\MoveEqLeft \begin{document} \begin{align*} \MoveEqLeft \begin{autobreak} A= (x + a + b +c+d+e+f+g) +y +z +(x + a + b +c+d+e+f+g) +e +d \end{autobreak} \end{align*} \end{document} Without modifying the lines themselves inside the autobreak manually by rewriting them, is it possible to obtain the desired output shown above in (*) by adding something in preamble or some other option for autobreak? Lualatex, TL 2026

A minimal working sample is as follows. \documentclass{article} \usepackage{amsmath} \usepackage[colorlinks=true]{hyperref} %\makeatletter %\def\tagform@#1{\maketag@@@{(\ignorespaces#1\unskip\@@italiccorr)}} %\DeclareRobustCommand{\eqref}[1]{\textup{\tagform@{\ref{#1}}}} %\makeatother \begin{document} \begin{equation}\label{eq} 1+2=3 \end{equation} TEXT \eqref{eq} TEXT \end{document} As you see, when using \eqref on the equation number, it produce only colorful equation number but black parenthesis, and also it produce a hyperlink only on equation number but including no parenthesis. Then how to make the parenthesis around equation number be colorful and hyperlinked too when using \eqref? I hope, the color could change when I reset linkcolor in hyperref. is it possible to redefine some setting to make the equation number be around with parenthesis when using \ref? In this case I think the parenthesis must be colorful and hyperlinked too.

While there are posts that allow changing the unicode arrows length, there's no unicode-math length extend arrows 🣖, 🣗, 🣘 style provided. How to use the extended arrows in unicode-math However, these settings commands cannot be applied to some special arrow styles (such as the Unicode 17.0 Supplemental Arrows-C). However, when I set it up, it only applied subscript arrows under the letters. \documentclass{article} \usepackage{unicode-math,accents} \setmathfont{NewCMMath-Book.otf} \newcommand{\overxrightarrow}[1]{\underaccent{\symbol{"1F8D6}}{#1}} \newcommand{\overSlashrightarrow}[1]{\underaccent{\symbol{"1F8D7}}{#1}} \newcommand{\overlobeleftrightarrow}[1]{\underaccent{\symbol{"1F8D8}}{#1}} \begin{document} $\overxrightarrow{ABCDEF}$, $\overSlashrightarrow{ABCDEF}$, $\overlobeleftrightarrow{ABCDEF}$ \end{document} References: How to make new combining below letters in LaTeX

\documentclass{article} \usepackage{xparse} \DeclareMathAlphabet{\mathu}{OT1}{cmr}{m}{ui} \newsavebox{\slantbox} \newcommand{\slant}[2]{\mbox{% \sbox{\slantbox}{#2}% \hskip\wd\slantbox \pdfsave \pdfsetmatrix{1 0 #1 1}% \llap{\usebox{\slantbox}}% \pdfrestore }} \newcommand{\im}[1]{\slant{0.23086}{\texttt{$\mathu{#1}$}}} \ExplSyntaxOn \cs_set_eq:NN \old_im \im \RenewDocumentCommand{\im}{m}{ \tl_set:Nn \l_tmpa_tl {#1} \tl_map_inline:Nn \l_tmpa_tl { \str_case:nnF {##1} { {\alpha} {\alpha} {\beta} {\beta} {\gamma} {\gamma} {\delta} {\delta} {\varepsilon} {\varepsilon} {\zeta} {\zeta} {\eta} {\eta} {\theta} {\theta} {\iota} {\iota} {\kappa} {\kappa} {\lambda} {\lambda} {\mu} {\mu} {\nu} {\nu} {\xi} {\xi} {\pi} {\pi} {\rho} {\rho} {\varsigma} {\varsigma} {\sigma} {\sigma} {\tau} {\tau} {\upsilon} {\upsilon} {\phi} {\phi} {\chi} {\chi} {\psi} {\psi} {\omega} {\omega} {\partial} {\partial} {\vartheta} {\vartheta} {\epsilon} {\epsilon} {\varrho} {\varrho} {\varphi} {\varphi} {\varpi} {\varpi} } {\old_im{##1}} } } \ExplSyntaxOff \begin{document} $\im{ABC\nabla\alpha\partial}$ \end{document} When I added \bm inside the only math box, a LaTeX No PDF error popped up. This did not change the Bold italic mathematical symbols. \begin{document} $\bm{\im{ABC\nabla\alpha\partial}}$ \end{document} Missing control sequence inserted. Undefined control sequence. Illegal parameter number in definition of \inaccessible. References: make math symbol italic

The following MWE compile correctly, but if luacolor is uncommented the triangle is black instead of red. % !TEX TS-program = lualatex \documentclass{article} \usepackage{memoize} %\usepackage{luacolor} \usepackage{tikz} \begin{document} \begin{tikzpicture} \fill[red] (0,0)--(1,1)--(2,0)--cycle; \end{tikzpicture} \end{document} Is there a workaround? Or is this a bug in memoize and/or luacolor? (luacoloris needed for kerning reasons, that do not show in the above MWE.)

The horizontal spacing is a bit bad when I'm drawing LaTeX pixel maps. \documentclass{article} \usepackage{setspace,parskip,newunicodechar,xcolor,fontspec} % parskip It's failing... \newunicodechar{█}{\fontspec{Arial}{█}} \newunicodechar{　}{\fontspec{Arial}{\color{white}{█}}} \begin{document} \vspace{-1mm} \color{blue}{█　████　}\color{gray}{█　████　}\\ \vspace{-1mm} \color{pink}{██　████}\color{cyan}{█　████　}\\ \vspace{-1mm} \color{yellow}{██████　　　██}\color{blue}{██} \end{document}

The original drawing instructions in ⅌: \documentclass{article} \usepackage{tikz} \usepackage[margin=0.5in]{geometry} \begin{document} \centering \begin{tikzpicture}[scale=2] % The stylized symbol is a calligraphic character, likely a script 'P' or 'V' with an ellipse. % We recreate it using thick paths and curves. % 1. The horizontal ellipse \draw[line width=6pt] (0.4, 0) ellipse (2.2 and 0.7); % 2. The main "U" shape (the stems) % Left stem starts from the flourish, goes down, curves at the bottom, and goes up to form the right stem. \draw[line width=14pt, line cap=round] (-0.6, 1.5) .. controls (-0.6, -3.2) and (0.6, -3.2) .. (0.6, 1.5); % 3. The flourish on the top left % A decorative hook and a small "bud" on top of the left stem. \draw[line width=14pt, line cap=round] (-0.6, 1.5) .. controls (-1.8, 2.8) and (-3.0, 1.5) .. (-2.2, 1.2); \fill (-0.5, 1.9) circle (0.25); % 4. The large loop on the right (completing the 'P' shape) % It starts from the top of the right stem, loops over to the right, and curves back down. \draw[line width=14pt, line cap=round] (0.6, 1.5) .. controls (0.6, 4.2) and (3.5, 3.2) .. (3.5, 0.5) .. controls (3.5, -0.8) and (2.5, -1.2) .. (1.8, -1.0); \end{tikzpicture} \end{document} However, after reading his/her command usage, This convert to can typed ⅌ text symbols method doesn't seem to work for multiple overlapping shapes in tikz (or maybe I just don't know how to use it). Is there better method to declare tikz picture with proper baseline and fontsize?