I am new in latex and I need to express the following symbols:  &amp;, &amp;&amp;, ^, | , || , &lt;, &lt;=, &gt;, &gt;= , == , != , %   When I write them in that way, nothing happens on the document. Please help.  best regards,
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I know what my symbol or character looks like, but I don't know what the command is or which math alphabet it came from. How do I go about finding this out?
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Here is a quick question, how to use tex to print this ' symbol? An example is shown below:  data 'a list = Nil | Cons (e, 'a list)   I tried to use ' or `, but they all looks bad.. I am sorry but I am not a native English speaker, so I don't even know the name of '..   Could anyone help me on this simple problem? thank you
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I can't draw a particular cross symbol in LaTeX.  I tried drawing it in Dextify, but that didn't recognize the symbol.  I don't even know what it is called.  Any help with the name or the code is appreciated.  An image is below.
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I need the characters «» in my LaTeX document.  I'm writing in English though, and I don't want to use Babel.  I have the following hack but I'd like a better way:  \newcommand{\q}[1]{{% \font\larm = larm1000% \larm% \char 190}{#1}{% \font\larm = larm1000% \larm% \char 191}}
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I was wondering what the proper LaTeX code would be to display something like this:    You don't have to include the mathematical symbols, what is important is the structure.
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\documentclass{article} %\usepackage{amsmath} It does Not work ! \begin{document} \[ x\lt y \gt z \] \end{document}  What library do I have to use such that the document can render \lt and \gt as less than and greater than signs, respectively? Edit I am using MathJax library in my site under Asp.net Mvc 3. Web application is vulnerable to XSS and XSRF attacks so &lt; and &gt; should be avoided as the input from the users. My database will save LaTeX commands that can be rendered by both LaTeX compiler and MathJax. Therefore, I need \gt and \lt that already work in MathJax. Source:  Rendered:
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Is there a way to typeset the symbol ":⇔" correctly in LaTeX (i.e. with the right alignment and spacing)?  I know that using :\Leftrightarrow or :\Longleftrightarrow gets me the symbol I'm looking for (more or less), but the spacing doesn't look right to me. Constructions using \iff or \colon didn't really seem to do the trick, either.   Do I have to define such a symbol myself (if so: how?), or is there a package proving this? Unfortunately, I did not find anything myself (especially because I don't know what to search for exactly; I got the description "defined to be logically equivalent" from Wikipedia, since I didn't even know the correct name).
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I want to write an equation in latex like the following one.   But I can not align a set of numbers with the coefficients completely. Here's my code:  \begin{equation} \begin{aligned} LNEP = &amp; -0.23LNEER &amp; +1.21LNCOST &amp; +1.50LNFD &amp; -1.03LNCP &amp; -9.44 \\ &amp; (0.12) &amp; (0.13) &amp; (0.27) &amp; (0.37) &amp; (1.33) \end{aligned} \end{equation}   And it looks like this:   Could somebody help me pls? Many thanks.
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Can anyone help me in giving commands for commutative diagrams in LaTeX ? It doesn't seem to appear properly in the LaTeX guides that I have. A command for a simple triangular diagram with arrows associated to maps would be good enough, or maybe some appropriate reference.
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I read many years ago about the meaning of TeX, coming from Greek letters, etc... Also I found many posts here related to the right way to write TeX, LaTeX and so on when it is not possible to use the macro \LaTeX.   But my question is: why are the letters a and e moved on the logo?
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I want to get that fancy LaTeX symbol to put in one of my documents but I cannot find it anywhere.  All searching for things like latex symbol have not resulted in the symbol but other symbols.
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I was reading a book the other day and they distinguished between the usual element symbol (\in) and an element symbol to show that a set is a member of a collection of sets. For the latter they used a square element symbol that looked similar to a wide E. Does anyone know what the code for this might be? The book,says it was prepared with regular LaTeX. Thanks.  The Symbol is
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I want to typeset some LaTeX source code by listings. I've tried this:  \documentclass{article} \usepackage{listings} \usepackage{xcolor} \lstset{     delim = [s][\ttfamily\color{orange}]{$}{$} } \begin{document} \begin{lstlisting} \documentclass{article} \usepackage{amsmath} \begin{document} $E = mc^2$ \end{document} \end{lstlisting} \end{document}     The equation turns orange. However, the two dollar signs are also highlighted as orange. If I just want contents in the two dollar signs turns orange, what should I do?
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I'd like to write a majuscule delta-like symbol in LaTeX but I can't find it's syntax anywhere. You can see the symbol on equation (12) of the following paper:  "".
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I'm looking after a macro to write the (La)TeX logo (with parentheses), i.e. something similar to \TeX, \LaTeX, but where the output includes ()'s.
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I assume this is really basic question, I'm new to LaTeX, I read a first step tutorial to get ready to write some documents but I couldn't answer my own question at this time and I really don't know where to search.  When I try to write é and compile my document, this character is not shown. I know the sequence is \'e to make it happen in the document but that is really disturbing to write.  Is there someway to write a paragraph "normally" and convert all the special chars into the LaTeX syntax? Or is there a way to allow é, à, ... writing so the compilation includes them into the document?
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I stumbled upon those two ways of writing a mathematical expression inside a text:    I could easily do the first one by writing the expression inside $s, but what about the second one? If I use \begin{displaymath}, it looks like this:    What is the correct command for this?