LaTeX: issue when using multicol with RTL languages - latex

I'm trying to use LaTeX with RTL language. when I set columns count to 2, LaTeX use LTR direction as default.
I try to use \RLmulticolcolumns command but it does not work!
\usepackage{multicol}
\begin{document}
\RLmulticolcolumns
\begin{multicols}{2}
some RTL text...
\end{multicols}
\end{document}
Any help?

Related

Above point in latex

I would like to know how to make a point above a symbol (ie : αΊ‹)
I tried \overset{.}{x}, but the point is very small...
Can you help me ?
Thanks
Just to write down one answer, elaborating a bit the source cited in the comments, and to add the following minimal codes.
\documentclass{article}
\begin{document}
$\dot{x}$
$\ddot{x}$
\end{document}
One dot (\dot) and two dots (\ddot) work in math mode as above. Three dots (\dddot) and four dots (\ddddot) the same but they require the package amsmath:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
$\dddot{x}$
$\ddddot{x}$
\end{document}
Instead in text mode, the package called stackengine may help:
\documentclass{article}
\usepackage{stackengine}
\begin{document}
\stackon[1pt]{x}{.}
\end{document}

How can I place a one-column-abstract in a two-column document in Latex?

How can I place a one-column-table in two-column-section in a LaTeX template?
If your document is "short enuogh" to justify this approach, rather than the opposite, you can arrange part of the text on two columns using the environment multicols from the package multicol.
\documentclass{article}
\usepackage{lipsum,multicol}
\begin{document}
\begin{abstract}
\lipsum[1]
\end{abstract}
\begin{multicols}{2}
\lipsum[2-4]
\end{multicols}
\end{document}
Here the package lipsum is only to generate blind text content. The output:

LaTeX two-column layout does not keep text between borders

I am using the \twocolumn tag to use the two-column layout in LaTeX. The problem is that this does not work properly and the text seems not to be fixed between the borders. Not sure if that minimal example helps, but at least you can see my includes and the text with which it happens.
\documentclass[12pt,a4paper, abstracton]{article}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage[backend=biber, sorting=none]{biblatex}
\usepackage{hyperref}
\usepackage[hyphenbreaks]{breakurl}
\usepackage[left=2cm,right=2cm,top=2cm,bottom=2cm]{geometry}
\begin{document}
\twocolumn
\section{Introduction}
Glutamate carboxypeptidase II (GCPII), N-acetyl-L-aspartyl-L-glutamate peptidase I (NAALADase I), NAAG peptidase or prostate-specific membrane antigen (PSMA) \dots
\end{document}
Screenshot of left column in PDF that shows the problem
Why does LaTeX write from the first column into the second column and how can I fix that? I would like to avoid change each line separately, where that happens. I am looking for a global solution.
Since the workarounds of the accepted answer were not satisfactory to me, I kept searching and found a more adequate and fast workaround, adding to my preamble the following:
\setlength{\emergencystretch}{3em}
The length 3em can be changed as needed, just keep it as low as possible in order to preserve optimal appearance.
More details here.
Latex has trouble finding a suitable break point because words with multiple capital letters are normally assumed to be acronyms which should not be hyphenated.
Possible workarounds:
force a line break with \linebreak before the word. This might result in undesirable large spaces in the line, especially in your situation in with only a single white space in the line
tell latex where possible break points are with long\-word (I don't know if there are any possible hyphenation points in NAALADase). This can also be globally for the whole document with \hyphenation{long-word} in your preamble
rephrase the sentence
use another layout. Very short lines combined with very long and unbreakable words is a tough combination
\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage[backend=biber, sorting=none]{biblatex}
\usepackage{hyperref}
\usepackage[hyphenbreaks]{breakurl}
\usepackage[left=2cm,right=2cm,top=2cm,bottom=2cm]{geometry}
\begin{document}
\twocolumn
\section{Introduction}
Glutamate carboxypeptidase II (GCPII), N-acetyl-L-aspartyl-L-glutamate peptidase I \linebreak (NAALADase I), NAAG peptidase or prostate-specific membrane antigen (PSMA) \dots
\end{document}

How to write the below in LaTeX?

I'm trying to write the big C in the picture below, Could anyone tell me how to write it?. And what is the name of this kind of letters?
With the amsfonts package, you can use the so-called blackboard bold font:
\documentclass{article}
\usepackage{amsfonts}
\begin{document}
\[
\mathbb{C}
\]
\end{document}

How to disable numbering in latex?

I am new to latex and I wrote the below tex code on Texmaker editor.
What I want to do is to add the "University" section without any numbering preceeding it and to be centered horizontally, because when I run the code I find that the word "University" is displayed but it is preceeded by a number and I do not want to display any number preceeding that word.
code:
\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage{kpfonts}
\author{Anan}
\pagestyle{plain}
\begin{document}
\section{University}
\end{document}
\section*{\centering University}
% * removes numbering for _this_ \section instance,
% \centering within environment centres the title.
Note however, that this is a local solution, and that it's better practice (and easier for you to make later document-global changes) to re-define the \section, \subsection, ... environments using the titlesec package, as is described well in Alan Munn:s answer in the following tex.stackexchange thread:
https://tex.stackexchange.com/questions/8546/section-heading-centering-problem
All you have to do is to edit your line 9:
\section{University}
this way:
\section*{\centering University}
since the command \section* produces unnumbered sections.
Further, if you want to to include an unnumbered section to your table of contents, you can add
\addcontentsline{toc}{section}{University}
(this time without \centering) just after. The resulting code:
\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage{kpfonts}
\author{Anan}
\pagestyle{plain}
\begin{document}
\tableofcontents
\section*{\centering University}
\addcontentsline{toc}{section}{University}
Text.
\end{document}

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