Articles of symbols

Laplace's equation symbols

I used \nabla to present the laplace equation but it is not work !!, so is there any method to write the del operator (Gradient) symbol ?

Ignoring asterisks * in the whole document

When using * to remove headlines from the toc, there might be times when you would like to see all the headlines in the toc — including the removed ones. But you would like to see the headlines just temporarily to check what is in your document and what is not there without changing all […]

Is there a \bigcdot symbol in LaTeX

In my diploma thesis I need to LaTeX a concatenation over a set of sets. I use the \cdot symbol for concatenation of two sets as in A \cdot B. (Please correct me if this is a wrong symbol for concatenation). I would need to type a concatenation over a set of sets, using a […]

Companion for \ell

In mathematical writing I often use \ell when I need an ‘ell’ variable, because l looks like a 1. In fact, I expect this is why the symbol exists :). Now, it often happens that my ‘\ell’ stands for (l)eft, and I would like to have a symbol for an ‘r’ variable that stands for […]

Problem of superimpose and how to change legend symbol

Given the plot as follows I have two problems: a and b are superimposed on each other, how should I make this clear on the graph? How could I change legend c to other icons like star? (It looks a bit similar to a) The code is shown below: \documentclass[tikz]{standalone} \usepackage{pgf} \usepackage{graphicx} \usepackage{tikz} \usepackage{pgfplots} \usetikzlibrary{arrows,automata,positioning} […]

Undefined control sequence \textquotesingle

I am new to latex. I get the following error: Undefined control sequence. man1 = Person(\textquotesingle{}M\textquotesingle {}, 1, {[}2, 1… …gle{}M\textquotesingle{}, 1, {[}2, 1{]})} And the line in question is: \texttt{man1 = Person(\textquotesingle{}M\textquotesingle{}, 1, {[}2, 1{]})}

TG Schola – missing symbol textbullet

I am using the tgschola package which provides the TeX Gyre Schola font. When I run a .tex file containing an itemize environment through pdflatex, I get the following warning: [Font] Font shape `OMS/qcs/m/n’ undefined using `OMS/cmsy/m/n’ instead for symbol `textbullet’. (page 1) Is there a way of fixing the warning?

How can I change a glyph in a Verbatim environment?

I have a document which contains example program code in Verbatim environments. The caret symbol produced by typing ^ looks too flat to me, so I defined a macro to produce a sharper version. \documentclass[12pt]{article} \usepackage[T1]{fontenc} \usepackage{graphicx} \usepackage{fancyvrb} %A more wedge-like caret for use in code. \newcommand\pow{\hspace{-1pt}\raisebox{-1pt}{\scalebox{1.2}{\textsf{\textasciicircum}}}\hspace{-1pt}} %Set up code environment \DefineVerbatimEnvironment{code}{Verbatim}{xleftmargin=12pt,xrightmargin=12pt,commandchars=\\\{\}} \begin{document} \begin{code} y […]

Displayed Math in tikz-cd diagrams

I have been using tikz-cd package to produce diagrams however I’m not finding a way to use displayed math within it. My point is that when I use the product sign for instance inside of it, it simply shows as it were inline. I’m using the following commands: \begin{figure}[!ht] \centering \begin{tikzcd}[row sep=huge, column sep=huge, text […]

Place symbol inside of \bigsqcup

How can I place a symbol inside of \bigsqcup? What I have tried is this: \newcommand{\concn}{\bigsqcup_{i=1}^n\hspace{-1.07em}\text{\footnotesize $h$\normalsize\hspace{0.6em}}} The problem ist that this only looks nice in an equation enviroment. When I use it inside of text, then my hspaces are no longer correct: Is there a method to place the h inside of \bigsqcup which […]