{syntax} is about the principles and construction of the (La)TeX language.

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problem on numbering of equations

I am trying to write equations in latex: See this following code: \documentclass{report} \usepackage{amsmath} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amscd} \usepackage{accents} ...
-1
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1answer
88 views

latex code diagram

It will be helpful if someone writes for me the code in latex for the following diagram and explain the code. The inverse limit is taken over s
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1answer
48 views

question in latex

\\ command in latex creates a new paragraph. I want a command in which when I finish a line, I want to have next line black and then I want to start from the left of next line. Is there an easy ...
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33 views

Why use \[ … \] and not $$ … $$ for displayed math mode? [duplicate]

For displayed math mode, one can use either one of : \[ ... \], or $$ ... $$, or even \begin{displaymath} ... \end{displaymath} But I see many people here saying: never use $$ ... $$ for ...
4
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1answer
176 views

What is the actual function of “&” in math environment?

First of all, I must and want to say that I really like the idea of this website. It's pretty awesome to have a place like this where you can ask all your questions regarding LaTeX/TeX. :D My ...
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0answers
41 views

Typesetting a context-free grammar [duplicate]

Is there a latex package that can be used to produce a language grammar similar to the following figure? If yes, which package?
2
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1answer
104 views

Syntax of Using Math Mode: Empty Lines (Beginner Question)

I'm just starting to learn LaTeX. I tried typing \begin{equation*} (sample of different operators and symbols separated with \,) \end{equation*} and I got a whole bunch of errors. It seems LaTeX ...
2
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1answer
37 views

How to right-align text in a grammar environment?

Using the grammar environment of the syntax package, I cannot find a way to right-align text in my syntax definition: \documentclass{article} \usepackage{syntax} \begin{document} \begin{grammar} ...
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2answers
473 views

History of the command \verb

Recently I inherited some LaTeX code for a CV that contained an e-mail address typed with \verb}john.smith@uni.org}. This snippet was in the middle of an multicol environment (so it was within several ...
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1answer
88 views

TikZ/PGF number in shape name

I'm currently creating my own shapes in TikZ. I'm trying to get a multiplexer to work, but I named the shape mux4to1 and one of its anchors D0. Basically, I'm getting a syntax error with the ...
4
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1answer
75 views

LESS and SASS source code formatting

I need to add piece of source code in LESS and SASS. Piece of code is divided into two columns. First column is source code in Less and second column in Sass, something like on this page, but without ...
4
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1answer
115 views

Macro take argument without wrapping in brackets?

I want to make macro which do not require curly brackets to accepts an argument. Lets invent an example. Say I want a macro which accepts an optional argument f and an argumentx: \dd[f]{x} And ...
5
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3answers
143 views

Delimiting-a-macro-with-itself-chain

Reading this question and the answer of @Werner made me think about if it is possible to have chains of self-delimiting macros like \XX abc \XX def \XX xyz or lets say \begin{someenv} \XX abc \XX ...
3
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2answers
64 views

Quotes within quotes breaking

When a word in single quotes falls at the end of the quotation, LaTeX decides to render it as "' instead of '". For example: ``He said it was `off the hook''' would render: "He said it was 'off the ...
2
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1answer
116 views

Problem with umlaut in Texworks

I can't seem to input the syntax for an umlaut. Here is what I write \documentclass[12pt]{article} \setlength\parindent{0pt} \usepackage{amsmath} \numberwithin{equation}{section} ...
4
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1answer
249 views

How should I write $x^*^2$

I want to raise the variable $x^* $ to the second power. Is there a standard way to write this? Perhaps by instead of using $x^* $ using some special star operator I am unaware of.
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0answers
75 views

Undefined Control Sequence in \multido or \pspicture?

I wrote the following very simple program as I'm trying to make an animation using pstricks and multido, but I get "undefined control sequence" on the end pspicture line. Can anyone just tell me ...
4
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1answer
141 views

Problem with listings package for Python syntax coloring

I am implementing the method I learned here for putting Python code in Latex. Everything works great except that I have problems with comments. Here's the code from the link I mentioned: ...
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2answers
425 views

A better way to do nested lists

This is how you type set a nested list in LaTeX: \begin{itemize} \item I have a house \begin{itemize} \item It has 4 walls \item a roof, \item two windows, ...
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5answers
232 views

add (a little bit long) comment on the equal sign?

There are posts here explained how to Add a comment on top of "equal" and "approximate" symbols , the idea is to use \stackrel{text}{=}, however, if the text is a bit long, for ...
5
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1answer
87 views

Redefine \middle| to insert space before and after itself

I want to use \middle| inside of brackets like this. \documentclass{article} \begin{document} \begin{equation} \left\{\frac{1}{n} \middle| n>0\right\} \end{equation} \end{document} ...
8
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1answer
76 views

weird ifnum with compact syntax [duplicate]

In some packages like tabularx, I find the following syntax in many places {\ifnum0=`}\fi or even \ifnum0=`{\fi} But I can't figure out why this can be useful for? Is ` a register of some kind? ...
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Creating a new variable from two variables, chosing primarily one and only the other if the first is missing [closed]

i am creating a new variable from two old ones in spss, the old ones have a few missing ones. I want the new variable to have the same value as var1, but if var1 has a missing value than the new ...
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2answers
738 views

A symbol for same order of magnitude in math mode [duplicate]

I want to write in math mode that something is compared to something else. It is, I want to say that both quantities have the same order of magnitude. What symbol should I use? ...
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2answers
705 views

What is the difference between square brackets and curly brackets in a command invocation?

Pardon the naive beginner question. In a command like: \textcolor[HTML]{4C7045}{dark green text}, or \documentclass[12pt]{article}, or \begin{figure}[htb], why are some arguments surrounded by [] and ...
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3answers
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Why is TeX/LaTeX-“programming” so different from other languages in terms of syntax?

Usually, e.g., when I want to have an if, I do something like this: if(value) { ... whatever code ... } But in LaTeX, its: \ifnum\count0<100 ... whatever LaTeX-code ... \fi There are ...
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1answer
71 views

numbers in BibTeX entries: syntax highlighting vs. reality

The following example has one relevant entry for this question, the year field. @INPROCEEDINGS{1181437, author={de Oliveira, W.R. and De Souto, M. C P and Ludermir, T.B.}, booktitle={Neural ...
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0answers
74 views

ASCII characters used in plaintext representation of TeX [closed]

I'm writing a parser/transformer thingie that accepts valid LaTeX, and emits valid LaTeX. Is there a list of ASCII characters that are allowed in TeX math mode? Or is any character fair game? ...
4
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1answer
202 views

How can I highlight SPSS Syntax code with the listings package?

I'm writing my master thesis at the moment and I want to add some code listings to the appendix. The code is written in "Syntax", the programming language of SPSS Statistics. Is there a way to ...
15
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2answers
472 views

Why does `x_\text y` work?

As far as I have understand the tokenization in LaTeX, x_\text y will be split up into x _ \text y Now the _ will consume/bind to the next token. However, \text takes an argument as well. If _ ...
4
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0answers
51 views

Why `\\` is wrong here? [duplicate]

The following codes return errors \documentclass{article} \begin{document} cd\\ [asd] \end{document} But this one will work \documentclass{article} \begin{document} cd [asd] \end{document}
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1answer
53 views

Remove spaces from source code

I have this code (javascript from language option supported in listings) \lstset{language=javascript} \begin{lstlisting} $('#term').terminal(function(command, terminal) { var cmd = ...
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0answers
147 views

Kile syntax highlighting: A single dollar sign in the preamble

I'm using Kile to edit my LaTeX documents. I define my own custom environment to hightlight LaTeX code named lstLaTeX with the following code: \documentclass[a4paper]{scrartcl} ...
2
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1answer
333 views

After changing Kate's LaTeX syntax highlighting file, syntax highlighting for LaTeX can not be selected anymore in Kile

I wanted to adapt the Kate LaTeX Syntax Highlighting file (in my case: /usr/share/kde4/apps/katepart/syntax/latex.xml), to have a different highlighting in Kile, as in the answer to disable syntax ...
4
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1answer
144 views

In forest (tikz) for syntax trees, how do I create an arc above one node separating it off from the rest of the tree?

Here's a picture example of what I want: I'm able to make the type of arc that I want with this command: \draw (-2,-2) [black,thick,dashed,domain=45:180] plot ({cos(\x)}, {sin(\x)}) ; But it ...
3
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3answers
446 views

Make an exam format with a logo

I am trying to make a header of an exam page but with logo. Below is my code. \usepackage{graphicx} \begin{document} \firstpageheadrule \begin{figure}[] \includegraphics[width=20mm]{logo.png} ...
3
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2answers
394 views

Using htlatex with tikz-dependency

I am trying to generate an html file from a tex file using htlatex. The htlatex works well with simple tikz pictures, but it has problem with the pictures (trees) drawn with tikz-dependency package. ...
2
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1answer
169 views

A very basic TikZ code that is not working

I tried to type a TikZ code for the first time but it did not compile, and I have no idea why. Is there any other packages that I have to use or is there anything wrong with the syntax? ...
2
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1answer
209 views

What comand should I use to fork used in math [duplicate]

When doing practical math, you often fork your calculation due to some conditions, eg. when doing equations with absolute value. There is a symbol for this, and I wonder if mathJax can render this one ...
3
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0answers
179 views

How do you read LaTeX syntax

Coming from the programming language side, I am used to the very regular syntax of these languages. E.g. in Python a function call has to be like below: callfun(arg1,arg2,key1=val1,key2,val=2) This ...
4
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1answer
289 views

Add keys to table (with picture and code) [duplicate]

As you see in the red part of the picture, I would like to add keys to explain what the brackets stand for. I just added this with paint, but is there a way to do this in tex? Also, are there nicer ...
23
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2answers
534 views

Backward definition of (La)TeX commands

Again and again I see, that TeXnicians define commands and do several things with them in the reverse order, I would do this as amateur. See this example: In his answer to scrpage2: Three ...
13
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1answer
160 views

How do I insert a tie (~) under expl3 syntax?

I need to define a token list of the form \tl_new:N \g_silly_tl \tl_set:Nn \g_silly_tl { Text ~ and ~ a ~ tie:?? } How do I do this? More generally, is there a reference where one can see how ...
3
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1answer
241 views

Why is my cross reference not working and some other questions

I am a TEX beginner and I am now learning how to create a reference. I am reading the book "The Not So Short Introduction to LATEX2" by Oetiker, Partl, Hyna, Schlegl; on page 42 section 2.8 Cross ...
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2answers
207 views

Can spaces at the beginning of a line ever cause problems?

To structure my sourcecode, I often use spaces for padding: \newcommand{\st}[1]{% \begin{tabular}{lr} \emph{Student} & \emph{Score}\\ #1 \end{tabular}% } Can this ever cause ...
7
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1answer
370 views

Clear and readable syntax style for tikz trees with edge labels and options

I'm fairly new to tikz and TeX but I don't have a problem writing the code for the tree. I just would like to have a human readable tree. Here's a minimal expample of the tree without edge labels or ...
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0answers
33 views

How do you format a Dates Contraction in LaTex? [duplicate]

I'm writing a paper and I need to include a date, for example 20th January 2011. How can I make the Contraction smaller and position it correctly as an ascender/superscript?
3
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1answer
161 views

Applying Matrix Operation Code

I'm (relatively) new to LaTeX, and I'm having a syntactic problem using the wonderful code here, which allows arbitrary matrix operations in LaTeX. I wrote a macro to generate certain matrices. ...
2
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1answer
64 views

Short syntax for including multiple times the same pages in pdfpages

Using the pdfpages package I can do something like this to merge some pages of a document. \includepdf[page={1,1,1,2,2,10,10,10,10},nup=1x2]{mypdf.pdf} In this case 3 times pages 1 and 2 times ...
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69 views

Dialect of the `[1.]` suffix in `\begin{enumerate}[1.]`?

I have a tool (pandoc) that is producing tex. Among the output is the following: \begin{enumerate}[1.] \item foo \item bar \item baz \end{enumerate} pdflatex then refuses to compile it with error ...