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I need your help to make the label, i.e. the numbers to be arranged circular nicely and spot-on (not estimating and guessing using rectangle coordinate, which is very difficult). i'm thinking of polar coordinate, but how to implement it so that it can be positioned exactly in the middle of each part? You see, I used manual and it looks ugly and messy... \documentclass[tikz,border=5pt]{standalone} \usepackage{tikz} \begin{document} \begin{tikzpicture}[scale=1.2, every node/.style={font=\Large}] % Radii \def\R{3} \def\r{1.75} % Outer circle (black) \draw[black, line width=1.2pt] (0,0) circle (\R); % Inner circle (cyan) \draw[cyan!70!black, line width=1.2pt] (0,0) circle (\r); % Straight dividing lines (green) \draw[green!60!black, line width=1.2pt] (-\R,0) -- (\R,0); \draw[green!60!black, line width=1.2pt] ({\R*cos(60)},{\R*sin(60)}) -- ({\R*cos(240)},{\R*sin(240)}); \draw[green!60!black, line width=1.2pt] ({\R*cos(120)},{\R*sin(120)}) -- ({\R*cos(300)},{\R*sin(300)}); % Outer ring numbers (red) % Top sector \node[red] at (-0.55, 2.35) {3}; \node[red] at ( 0.55, 2.35) {5}; % Upper-right sector \node[red] at (1.90, 1.65) {4}; \node[red] at (2.30, 0.65) {7}; % Lower-right sector \node[red] at (2.35,-0.65) {0}; \node[red] at (1.90,-1.65) {6}; % Bottom sector \node[red] at (-0.55,-2.35) {2}; \node[red] at ( 0.55,-2.35) {10}; % Lower-left sector \node[red] at (-1.90,-0.65) {4}; \node[red] at (-2.30,-1.65) {1}; % Upper-left sector \node[red] at (-2.30, 0.65) {8}; \node[red] at (-1.90, 1.65) {7}; % Inner circle numbers (red) \node[red] at ( 0.00, 0.95) {?}; \node[red] at ( 1.05, 0.25) {5}; \node[red] at ( 1.00,-0.65) {15}; \node[red] at ( 0.00,-1.10) {8}; \node[red] at (-0.95,-0.60) {11}; \node[red] at (-1.05, 0.25) {6}; \end{tikzpicture} \end{document} At least, I wish to have something similar to this:

For my probability course, I want to create the following figure with marbles. EDIT: red purple means, it could be red or purble I could create this in Tikz, placing each marble separately, but that does not seem like the correct method to me. AI returned the following (incorrect code). \documentclass[10pt,a4paper,svgnames,openleft,explicit]{book} \usepackage{tikz} \usetikzlibrary{decorations.pathreplacing} \begin{document} \begin{center} \begin{tikzpicture} % Parameters \def\r{0.35} % radius \def\dx{1.0} % x distance \def\dy{1.0} % y distance % --- BOVENSTE 4 RIJEN: rood/paars half --- \foreach \row in {0,1,2,3}{ \foreach \col in {0,...,7}{ % paars rechts \fill[purple] (\col*\dx, -\row*\dy) arc[start angle=-45, end angle=135, radius=\r] -- (\col*\dx, -\row*\dy) -- cycle; % rood links \fill[red] (\col*\dx, -\row*\dy) arc[start angle=135, end angle=315, radius=\r] -- (\col*\dx, -\row*\dy) -- cycle; } } % --- ONDERSTE 4 RIJEN: geel --- \foreach \row in {4,5,6,7}{ \foreach \col in {0,...,7}{ \fill[yellow] (\col*\dx, -\row*\dy) circle (\r); } } % --- ACCOLADE + tekst --- \draw[line width=1pt] (8.5, -0.3) -- (8.5, -3.7) decorate[decoration={brace, amplitude=8pt}]{(8.5,-3.7) -- (8.5,-0.3)}; \node[right] at (8.7, -2) {geen 6 gele}; \end{tikzpicture} \end{center} \end{document} Resulting in this figure Any suggestions?

I don't quite understand why the first node is no longer pointing toward $C_0$. How can I move $C_0$ to be on the far right side, still level with the first node (kind of looking like a trapezoid) while still connected to the first node? \documentclass{article} \usepackage{tikz} \usetikzlibrary{graphs} \begin{document} \begin{center} \scalebox{1.2}{ \tikz \graph [grow right sep]{ x1 [as =$\displaystyle \int_a^b{f(x)dx}$] -> {x2[as=$C_0$, red], x3[as=$F(t)$] -> x4[as=$F^\prime(t)$] -> x5[as=$\displaystyle \int{F^\prime(t)dt}$] -> x6[as=$C(t) + C_{1}$, red]->x2}; }; } \end{center} \end{document} This is what it currently looks like: This is the intended result (essentially, ignore the terrible drawing lol): Any help or a push toward some sort of useful resource is much appreciated.

How can I place labels (A and B) on the outside in the venndiagram package \documentclass[10pt,a4paper,svgnames,openleft,explicit]{book} \usepackage{venndiagram} \begin{document} \begin{center} \begin{venndiagram2sets}[showframe=false] \fillA \fillB \node at (1,2) {a}; \node at (1.5,1) {b}; \node at (1.8,2) {c}; \node at (2.5,1.4) {d}; \node at (2.5,1.8) {e}; \node at (3.5,1.3) {f}; \node at (3.7,1.8) {g}; \end{venndiagram2sets} \end{center} \end{document}

How do I write \hom_{k\text{-alg}} correctly? Semantically, this is incorrect since -alg is not text, so it shouldn't be in the normal text font but in math font. Using \mathrm however is also wrong as the - sign will become a minus sign, which has wrong spacing. What is the best way to write this? If possible, I want to avoid stuff like \mathchardef\hyph="2D and use \hyph instead of - (this is meant for a beginners course). Edit: As there is a lot of debate and confusion, here an MWE (with the "correct" command in one of my commands). \documentclass{article} \usepackage{newtxtext} \usepackage{amsmath} \newcommand{\alg}[1]{\mathord{#1\!\operatorname{-alg}}} \begin{document} \[ \hom_{k\text{-alg}}, \hom_{k\mathrm{-alg}}, \hom_{\alg{k}} \] \end{document}

How to colorized any line drawed with draw (nor with plot expression)? \documentclass{article} \usepackage{pgfplots} \pgfplotsset{compat=1.18} \begin{document} \begin{tikzpicture} \begin{axis}[ axis lines = middle, %title={Cor baseada no valor de $y$}, title={Color depending on $y$ coordinate}, colormap/hot % Podes usar 'hot', 'cool', 'jet', etc. ] \addplot[ mesh, % Divide o trazo en segmentos para aplicar cores thick, domain=-3:3, samples=100, point meta=y % Indica que a cor depende do valor de y ] {x^2}; % A función matemática \draw[thick, xshift=0.5,rounded corners] (-2,0.5) .. controls (0,-1) and (0,7) .. (1,7.8) .. controls (2,1) and (2,4) .. (3,3) node[anchor=east,pos=0.95] {How to colorize black line with colormap?} node[anchor=north east,pos=0.95] {depending on $y$ coordinate}; \end{axis} \end{tikzpicture} \end{document}

I would like to reproduce the following image using the circuitikz package: So far I was able to write the following MWE: \documentclass[border=1mm, 11pt]{standalone} \usepackage{circuitikz} \usetikzlibrary{positioning} %---------------------------------------------------------------% \begin{document} \begin{circuitikz}[ node distance = 3mm and 7mm, N/.style = {draw, minimum height=13mm, text width=#1, font=\small\linespread{0,84}\selectfont, align=center}, ] \ctikzset{inductors/coils=6, quadpoles/transformer core/inner = 1.0, quadpoles/transformer core/width = 0.5, quadpoles/transformer core/height= 0.68} \node (n1) [N=13mm] {SPE\\ PHY}; \node (n2) [transformer core, rotate=90, transform shape, right=of n1, anchor=base] {}; \node (n3) [transformer core, right=of n2.south] {}; \node (n4) [N=23mm, right=of n3] {common mode\\ termination}; %--- \draw[semithick] (n2.north east) -- (n2.north east -| n1.east) (n2.north west) -- (n2.north west -| n1.east) % (n2.south east) |- (n3.north west) (n2.south west) |- (n3.south west) % (n3.north east) -- (n3.north east -| n4.west) (n3-L2.midtap) -- (n4.west) (n3.south east) -- (n3.south west -| n4.west); %-------------------- \end{circuitikz} \end{document} which produce: As you can see, connections between transformers and connecting lines are not as on image, which I want to reproduce. Is there a (if possible simple) way to improve these connections?

The following code: \documentclass{article} \begin{document} \[ f(x',\overline{x'}) \] \end{document} produces the following output for me: I'm a bit bothered that the heights of the primes are mismatched. My first thought for how to fix this issue was to add a phantom overline over the first argument so that the prime in the first argument would get pushed down to the same height. However, despite some experimentation with syntax (\phantom{\overline}{x'} for instance), I couldn't find something which compiles. Apologies if this has been asked before. The inverted version of this question overline over no text does not seem relevant here.

I've noticed that monospaced fonts have uppercase Greek letters but no lowercase Greek letters. Is there a mathematical format to resolve this issue with monospaced fonts? \documentclass{article} \begin{document} $\mathtt{\Gamma \Delta \Theta \Lambda \Xi \alpha \beta \gamma \delta}$ \end{document}

I would like to use a luadraw picture as a background image on a page. I tried overlay, but this is not working as the picture is shifted above right. Luadraw is not (yet?) on CTAN, but available on github: luadraw %!TEX TS-program = lualatex \documentclass[a4paper]{article} %\usepackage[ignoreall, margin=-0cm, marginparsep=0cm]{geometry} \usepackage{luadraw} \begin{document} \begin{luadraw}{} local g = graph:new{ margins={0,0,0,0} , size={31,31} , pictureoptions="overlay" } for j= 1, 5 do for k=1,10*j do g:Dcircle(Zp(j,k*math.pi/(5*j)),1) end end g:Show(true) \end{luadraw} % without overlay, the center of the picture (on a new page) is approximately at (20,10) (if (0,0) is the bottom left corner % with overlay, the center of the picture is out the page (at (30,50) ? maybe) \end{document} (The original picture is more complex than this one, so using a standard tikzpicture is not really an option)

As a sort of follow-up to a previous question, why is "every [shape] node" applied after node options? For example, \documentclass[tikz]{standalone} \begin{document} \begin{tikzpicture}[every rectangle node/.style={draw=black, minimum width=1cm,minimum height=1cm}] \node [rectangle] {hello!}; \node [rectangle] at (2.5,0) {hello again!}; \node [rectangle,minimum height=2cm] at (0,-2) {Hello, world!}; \bgroup \tikzset{every rectangle node/.style={draw=black,minimum width=1cm, minimum height=2cm}} \node [rectangle] at (2.5,-2) {Hello, world!}; \egroup \node [rectangle] at (0,-3.75) {goodbye!}; \end{tikzpicture} \end{document} which produces The two "Hello, world!" boxes should look the same, but because of the order in which things are applied, they do not. Creating a group with "every rectangle node" fixes it, as in the example, but is cumbersome. (The bgroup...egroup guards prevent the \tikzset settings from propagating to the rest of the picture, too.) My main question: Why is "every [shape] node" applied after the node options, overriding what is (presumably) the user's choice for that particular object, and is there interest from TikZ developers in changing that default to restore what seems to me to be the more intuitive behavior, that is, applying the "every [shape] node" settings just before the node's optional arguments, so the optional arguments override anything that is applied "globally"? If it would be helpful for me to raise this as an issue on Github, I can do that.

Which ressources (and in which order) would you recommend to (re)learn modern LaTeX for an advanced user that learned LaTeX twenty years ago? I have the impression that many things have changed these past years: NewDocumentCommand, hooks, standard packages that became obsolete, useful things that have been moved to the kernel, utf8 support out of the box, … I thus need to update my LaTeX knowledge, but I am unsure to where to start. A document summarising the changes would be invaluable, but might not exist. An alternative would be recent ressources that assume some familiarities with TeX. If none of these exists, an introductory text will do. The emphasis is on learning things that will be useful in the present, but also in the future. Using experimental methods/packages is not a problem if there are good indications that they will be standard at some point in the future. On the opposite, I would like to avoid learning standard methods/packages that are doomed to be obsolete/deprecated soon. For context: I started to use TeX 20 years ago. At the time I read lshort, The LaTeX Companion (2e) and the TeXbook. This allowed me to became an advanced user of LaTeX and produce documents of far better quality than the one produced by some old professors still using deprecated methods and preamble full of outdated packages. With the years passing I started to add more and more packages to my preamble, as fixltx2e, to finally discover that they became obsolete. A lot has happened these past 20 years and it seems reasonable to start anew in order to unlearn old habits and learn new ones.

I would like the baseline of "with nitrogen" to be aligned with the bottom edge of the square shaded gray. The bottom of the tail (descender) in the "g" is currently setting the baseline for the phrase. I tried using \makebox[0pt]. Same edit for the other node. \documentclass[10pt]{amsart} \usepackage{tikz} \begin{document} \begin{tikzpicture}[x=1cm,y=1.5cm] %The key is drawn. The keys in other bar graphs have sample regions that are squares with edge length 0.25 centimeters. As the vertical dimension is scaled by 150%, the heights of the sample squares must be scaled by 2/3. \path[fill=gray] (6, {2 + (2/3)*0.125}) -- (6.25, {2 + (2/3)*0.125}) -- (6.25, {2 + (2/3)*0.375}) -- (6, {2 + (2/3)*0.375}) -- cycle; \draw (6, {2 +(2/3)*0.125}) -- (6.25, {2 +(2/3)*0.125}) -- (6.25, {2+(2/3)*0.375}) -- (6, {2+(2/3)*0.375}) -- cycle; \node[anchor=south west, inner sep=0, font=\small] at (6.375, {2 + (2/3)*0.125}){\makebox[0pt][l]{with nitrogen}}; \path[fill=black] (6, {2 - (2/3)*0.125}) -- (6.25, {2 - (2/3)*0.125}) -- (6.25, {2 - (2/3)*0.375}) -- (6, {2 - (2/3)*0.375}) -- cycle; \draw (6, {2 - (2/3)*0.125}) -- (6.25, {2 - (2/3)*0.125}) -- (6.25, {2 - (2/3)*0.375}) -- (6, {2 - (2/3)*0.375}) -- cycle; \node[anchor=south west, inner sep=0, font=\small] at (6.375, {2 - (2/3)*0.375}){without nitrogen}; \draw (5.875, {2 - (2/3)*0.5}) -- (5.875, {2 + (2/3)*0.5}) -- (8.85, {2 + (2/3)*0.5}) -- (8.85, {2 - (2/3)*0.5}) -- cycle; \end{tikzpicture} \end{document}

I have to automatially switch from two-multicols and onecolumn mode with \chapter, here below is what I was after: \documentclass[openany]{book} \usepackage{multicol} \usepackage{lipsum} \begin{document} \chapter{AAAAAAAAAAAAAAAA} \begin{multicols}{2} \section{11} \lipsum[1-3] \section{22} \lipsum[1-3] \end{multicols} \chapter*{BBBBBBBBBBBBBBBBB} \begin{multicols}{2} \section*{11} \lipsum[1-3] \section*{22} \lipsum[1-3] \end{multicols} \chapter{CCCCCCCCCCCCCCCCC} \begin{multicols}{2} \section{11} \lipsum[1-3] \section{22} \lipsum[1-3] \end{multicols} \end{document} However, I want to hook to switch the one/two-columns with \chapter, I tried with: \documentclass{book} \usepackage{multicol} \usepackage{lipsum} \makeatletter \AddToHook{cmd/chapter/before}{\ifnum\col@number>1\end{multicols}\fi\clearpage} \AddToHook{cmd/chapter/after}{\begin{multicols}{2}} \AtEndDocument{\ifnum\col@number>1\end{multicols}\fi} \makeatother \begin{document} \chapter{AAAA} \lipsum[1-3] \chapter*{BBBB} \lipsum[1-3] \chapter{CCCC} \lipsum[1-3] \end{document} but it complained with: ! Argument of \hook_use:nnw has an extra }. <inserted text> \par l.13 \chapter {AAAA} ? Looks like there exists some group mismatch ;-( I wonder why this happened? And how to achieve what I want?

I want to use a \foreach loop to define a series of commands of the form \bf\l where \l runs through the uppercase letters of the alphabet and \bf\l evaluates to \mathbf{\l}. This is so that I don't have to manually define \bfA, \bfB, etcetera at the start of all my documents. I've tried the following setup (patched together from Defining a newcommand, with variable name, inside another newcommand): \documentclass{article} \usepackage{amsmath,pgffor} \foreach \l in {A,B,C,D} { \expandafter\newcommand\csname bf\l\endcsname{ \mathbf{\l}% } } \begin{document} $\bfA$ $\bfB$ $\bfC$ $\bfD$ \end{document} It resulted in four errors, namely that the four commands are undefined. Where am I going wrong, and why does this not work?

I'm using sourcesanspro as my default text font to write my thesis (with fourier for the math mode), along with siunitx to deal with number and units printing. Everything was working just fine until I decided to update all of my packages with miktex and especially the sourcesans package. The error I got is : ! Use of ??? doesn't match its definition. ??? ! LaTeX Error: Erroneous variable \l__siunitx_print_version... l.27 ...mathrm{l} \left[\unit{\ohm\per\kilo\meter} \right] \cdot x \left[\un... If you say, e.g., \def\a1{...}', then you must always put 1' after `\a', since control sequence names are made up of letters only. The macro here has not been followed by the required stuff, so I'm ignoring it. This error happen for every siunitx command (\qty, \unit, \num) used in math mode. Outside of math mode (in text mode), it seems to be ok. Here is a MWE : \documentclass[12pt]{article} \usepackage[utf8]{inputenc}\usepackage[T1]{fontenc} \usepackage[default]{sourcesans} % Police Source Sans \usepackage{amsmath,mathtools,amssymb,amsthm,amsfonts,bm,siunitx,commath,xfrac} % Math Presets \sisetup{detect-family=true, detect-mode=true, detect-weight=true, detect-shape=true} %police pour siunitx \begin{document} $\unit{\ohm\per\kilo\meter}$ \unit{\ohm\per\kilo\meter} \qty{90}{\kilo\volt} \end{document} I reported this bug to the sourcesans package git hub (https://github.com/silkeh/latex-sourcesanspro/issues/10#issue-4128078876) and still waiting for a response. What should I do ? Should I try to manually roll back the update ? How should i do that ? Thanks for your help

I was scrolling through reels earlier and came across a really cool animation: https://www.youtube.com/shorts/aQbq_Fpyyb4. Note: You can analyze the gif frame by frame using the method suggested by MS-SPO in the comments, or by using the website ez-gif, or by using custom python scripts. I interchangeably use ez-gif and python for these sorts of things, and in this instance used ez-gif. I did some digging and found this old post, which I modified slightly. % Source - https://tex.stackexchange.com/a/205608 % Posted by Mark Wibrow % Retrieved 2026-03-22, License - CC BY-SA 3.0 \documentclass[tikz, border=5]{standalone} \usetikzlibrary{lindenmayersystems} \tikzset{koch snowflake/.style={insert path={% l-system [l-system={rule set={F -> F-F++F-F}, axiom=F++F++F, step=0.75cm/3^#1, angle=60, order=#1,anchor=center}] -- cycle}}} \begin{document} \begin{tikzpicture} \path[fill=orange,koch snowflake=4]; \end{tikzpicture} \end{document} I am however without a clue as to how to go about producing this gif I found. I am seeking assistance in creating this gif.

when defining a figure that holds a table of images, how do i ensure even and symmetric padding when using \hline in it? by default, there's no padding before the row that was \hlined. i have the following MRE: \documentclass{article} \usepackage{array} \usepackage{graphicx} \newcolumntype{I}{>{\centering\arraybackslash}m{0.18\linewidth}} % simulate images \newcommand{\fakeimg}{\rule{\linewidth}{2.5cm}} \begin{document} \begin{tabular}{c I I I} & A & B & C \\ row1 & \fakeimg & \fakeimg & \fakeimg \\ \hline row2 & \fakeimg & \fakeimg & \fakeimg \\ \end{tabular} \end{document} this produces the following image, where the rule is stuck tightly to the images on the second row: how do i define the padding in a controlled (tunable) manner so that the optional rule perfectly divides it in half (i want to add the divider only between specific pairs of rows)? i've tried interjecting a bunch of artifical spaces and padding in the rows before/after, but they all break apart when i wish for a small-scale padding of, say, 0.3ex: my attemps yield assymetrical padding where the padding before second row is smaller than padding after the first row.

I'm new to luadraw and I'm trying to recreate the diagram below: Here is my code so far, and the result: % !TEX TS-program = LuaLaTeX \documentclass{standalone} \usepackage[3d]{luadraw} \begin{document} \begin{luadraw}{name=wedge} local a, b, c = 8, 6, 4 local xmax, ymax, zmax = a+1, b+1, c+1 local g = graph3d:new{ window3d = {0,xmax,0,ymax,0,zmax}, viewdir = {30,60}, size={10,10,0} } local xIntcpt, yIntcpt, zIntcpt = M(a,0,0), M(0,b,0), M(0,0,c) local P = M(4,0,0) local Q = interDD({P,vecJ},{xIntcpt,yIntcpt-xIntcpt}) local R = interDD({P,vecK},{xIntcpt,zIntcpt-xIntcpt}) g:Dscene3d( g:addPolyline({ {Origin,xmax*vecI}, {Origin,ymax*vecJ}, {Origin,zmax*vecK}, }), g:addPolyline( {xIntcpt,yIntcpt,zIntcpt}, {close=true,color="cyan"}), g:addFacet( {P,Q,R}, {color="cyan",opacity=0.5} ), g:addPolyline( {P,Q,R}, {close=true,color="cyan",style="dashed"} ), g:addLabel( "\\(x\\)",P,{pos="NW",dist=0.1}, a,xIntcpt,{pos="NW",dist=0.1}, b,yIntcpt,{pos="N",dist=0.1}, c,zIntcpt,{pos="NW",dist=0.1} ) ) g:Show() \end{luadraw} \end{document} The issue, as you can see, is that the point (0,6,0) is out of frame. I tried increasing ymax, that seems to have no effect. I tried changing the width in the size option, but that only stretches the diagram horizontally. I have tried different viewdir options, but they all cut the diagram off at one edge. I'm sure it's something basic that I'm missing, but I'm too much of a novice to notice. Any clues?

As what my knowledge could tell, It's possible to create a triangle with only 2 coordinates to make real angles to be exact, and using path to create long rays and naming the intersection of those rays and finally connect them with \draw. MWE: \documentclass[tikz, border=10pt]{standalone} \usepackage{siunitx} \usetikzlibrary{intersections} \begin{document} \begin{tikzpicture}[scale=2] \clip (0,0) rectangle (5,2.1); \coordinate (A) at (0,0); \coordinate (C) at (5,0); \path[name path=AB] (A) -- ++(37:4); \path[name path=BC] (C) -- ++(137:4); \path[name intersections={of=AB and BC, by=B}]; \draw[thick] (A) -- (B) -- (C) -- cycle; \end{tikzpicture} \end{document} There is a noticable difference if I comment \clip in the 6th line. Without it, it's going to be a white space... It's impractical to calculate the height of the object if I make another drawing with more complicated shape. So, is it possible to autocrop the exceeding lines? What I meant by exceeding lines is like the cyan lines in the figure below. It's because they contribute to white space if I change \draw to \path: So, if possible, I want TikZ to automate cropping the intersection, in other words, getting rid of those exceeding lines without estimating like how much the height is (would consume loads of time if I make other complicated figures with intersections). To illustrate what I actually want, roughly I want something like this: Yes, I deliberately cropped it poorly to give an example as to what it shows if I gave them an incorrect clipping, which I wish I didn't need to clip it, but instead, I wish TikZ only read the intersection point and two given coordinates to draw.

The ltx-talk class for slides defines its own basic lists, so that they can be used with overlays. I am interested in using custom lists, for example ones that pre-format dialogue. Doing this in the usual way with enumitem currently fails. A brief example follows. Is there a way to insulate custom lists from the class's baked-in list definitions, so that this will work, by putting them in something like a minipage environment? Failure case \DocumentMetadata{tagging = on, lang = en-us} \documentclass[aspect-ratio=4:3]{ltx-talk} \usepackage{enumitem} \newlist{dialist}{description}{1} \setlist[dialist]{font=\textsc, leftmargin=2cm, style=nextline} \begin{document} \begin{frame} \frametitle{Dialogue} \begin{dialist} \item[Socrates] And your opinion is right, as you can prove in this way: if some one asked you “Is there, Gorgias, a false and a true belief?” you would say, Yes, I imagine. \item[Gorgias] I should. \item[Socrates] But now, is there a false and a true knowledge? \end{dialist} \end{frame} \end{document} error: ! Package enumitem Error: Non standard \item.

I am using babel package with Spanish style (in amsart class), which puts acute accents in math symbols such as \lim, \max, \inf, etc. It is actually nice, because it keeps all the formatting in the same language and style. However, it doesn't put the accent in \varprojlim, which doesn't go with the general layout. Is it possible to make \varprojlim have the accent as everything else? MWE: \documentclass{amsart} \usepackage[spanish]{babel} \usepackage{amssymb,amsfonts,amsmath} \begin{document} \[ \lim \; \inf \; \max \] \[ \varprojlim \] \end{document} Result:

It seems (or is apparently) that thickness of lines is hard coded. Consequently when drawing a line, the use for example of scale=2 only makes the line longer and its thickness is not changed, see MWE below: \documentclass[margin=3mm, varwidth]{standalone} \usepackage{tikz} \usetikzlibrary{arrows.meta} \tikzset{LA/.style = {-Straight Barb, line width=1mm}} \begin{document} \begin{tikzpicture} \draw[LA] (0,0) -- ++ (2,0); \end{tikzpicture} \begin{tikzpicture}[scale=2] \draw[LA] (0,0) -- ++ (2,0); \end{tikzpicture} \end{document} Is there some trick by which the thickness of the line will also be scaled? The best way would be as option of the line style, which will have effect just on this particular line. My quick search on this site so far didn't give me any suggestion ...

How should I interprete the case B? Case A \documentclass[tikz,border=12pt,12pt]{standalone} \begin{document} \begin{tikzpicture}[dot/.append style={circle,fill,inner sep=3pt}] \draw (-3,-3) grid (3,3); \draw[line width=3pt] (-3,-1) coordinate[dot] -- (0,-1) coordinate[dot] -- ([turn]45:{sqrt(2)}) coordinate[dot]% turn 45 degrees relative to the previous segment direction -- ([turn]90:3) coordinate[dot]; \path (0,0) coordinate[dot,red]; \end{tikzpicture} \end{document} Case B \documentclass[tikz,border=12pt,12pt]{standalone} \begin{document} \begin{tikzpicture}[dot/.append style={circle,fill,inner sep=3pt}] \draw (-3,-3) grid (3,3); \draw[line width=3pt] (-3,-1) coordinate[dot] -- (0,-1) coordinate[dot] -- +([turn]45:{sqrt(2)}) coordinate[dot]% how should this line be interpreted? -- ([turn]90:3) coordinate[dot]; \path (0,0) coordinate[dot,red]; \end{tikzpicture} \end{document}

I'm working on a LaTeX document where I have multiple image files, some of which have a -converted version. For example, my files might look like this: a.png b.png b-converted.png c.png c-converted.png d.png I want to include the images in my document using a command like: \includegraphics{a.png} % includes a.png \includegraphics{b.png} % include b-converted.png \includegraphics{c.png} % include c-converted.png \includegraphics{d.png} % includes d.png That is, the logic should be: If basename-converted.ext exists, include that. Otherwise, include the original file: basename.ext. MWE \documentclass{article} \usepackage{graphicx} \begin{document} \includegraphics{a.png} \includegraphics{b-converted.png} \end{document} EDIT: I should work with multiple multiple file extension, like png, jpg, pdf, svg ...

I am trying to draw a manifold using tikz. The best way I can think of is to give several points and generates smooth lines connecting those points. Here is my draft: \documentclass{article} \usepackage{amsmath,amssymb,amsthm} \usepackage{tikz} \begin{document} \begin{tikzpicture} \draw[thick] plot [smooth cycle, tension=1] coordinates { (-2.5,0) (-1.6,1) (0,0.55) (1.6,1) (2.5,0) (1.6,-1) (0,-0.55) (-1.6,-1) }; \draw[thick] (-1.85, -0.05) to[out=-30, in=210] (-0.95, -0.05); \draw[thick] (-1.7, -0.1) to[out=45, in=135] (-1.1, -0.1); \end{tikzpicture} \end{document} The lines are not very smooth. Is there a way to make the lines more smooth? Or is there a better strategy to draw this? Thanks in advance.

I would like to create a fast/optimized fully expandable function that counts the number of spaces in an argument: \documentclass{article} \begin{document} \countspaces{ A B } % Should return 3 (1 is ok too if leading and trailing spaces are removed) \countspaces{A \mycommand B} % Should return 2 (\mycommand is not expanded) \countspaces{A {a b c} B} % Should return 2 (spaces inside groups are not counted) \end{document} Explicit spaces should be counted too. How to achieve that?

I'm working on a document that contains quite a lot of tables. In many of these tables, some columns have normal text, while other columns have other things (e.g. inline images, math formulae, etc) that are taller than a normal line of text. With a normal tabular environment, the text ends up on the same baseline as the larger things, which doesn't look good. I would prefer it be vertically centered, so that the midline of the text lines up with the midline of the larger things. I've seen the tabularray package suggested, but it looks like that uses a very different syntax from a normal tabular, and I have many tables to update and a deadline in two days. I'm open to switching if there's a straightforward way to convert tabulars into tabularrays without changing anything about the default appearance or behavior, but otherwise, I'm worried about the dimensions changing. So: is there some way to change the behavior of a tabular (a certain table, a certain column, even a certain cell if necessary) so that text in cells is vertically centered, without changing anything else about its dimensions and layout? MWE: \documentclass[12pt,letterpaper]{book} \usepackage{booktabs} \begin{document} \begin{table}[h] \centering \begin{tabular}{ccc} \toprule Normal & Bigger & Normal \\ \midrule Lorem & {\Huge XYZ} & Ipsum \\ \midrule Dolor & {\Huge ABC} & Sit \\ \midrule Consec & {\Huge JKL} & Tetur \\ \bottomrule \end{tabular} \end{table} \end{document} I would like the midline of the smaller text to line up with the midline of the huge text, while keeping everything else about the table the same. I've seen many questions about vertically centering text in table columns, but none of the answers I've seen allow keeping the rest of the table the same (they tend to involve switching to a different environment with different behavior). I've seen that a single-cell multicolumn will center things vertically, but adding those to every single cell in many separate tables is going to be a nightmare, so I'd prefer something I can use once per table instead of once per cell if possible.

Here below is the example code: \documentclass{article} \usepackage{unicode-math} \setmathfont{TeX Gyre Pagella Math} \begin{document} Inline $(\frac{1}{b} , \frac{1}{a})$ \[ (\frac{1}{b} , \frac{1}{a})\] \end{document} Noted that the baseline of a is abnormal when inline, but normal in display. Is that a bug or feature of TeX Gyre Pagella Math? That is also quite confusing for me that why inline and display behave quite different, is not the same a glyph was used? Any hot-fix to change the baseline in inline math for a here? Any tricks(maybe luatex?) are all welcome!

I cannot seem to figure out why the \clearpage (or anything for that matter) causes the \AtEndDocument hooks to not work. The other two dont seem to ever do anything which likely means I am using them wrong. \documentclass{article} \usepackage{atveryend} \AtEndDocument{\addtocontents{toc}{\protect bla?}} \AfterLastShipout{\addtocontents{toc}{\protect bla??}} \AtVeryEndDocument{\addtocontents{toc}{\protect bla???}} \begin{document} \tableofcontents \section{blub} \clearpage \LogHook{enddocument} \end{document} The output from the log is the same regardless of the \clearpage > Document-level (top-level) code (executed last): > -> \addtocontents {toc}{\protect bla?} Edit: Added photo demonstrating how none of the hooks function as expected.