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May 16, 2022 Post a Comment

This article volition reply common LaTeX questions and provide solutions to common LaTeX bug. For more active help, please consult the AoPS bulletin board.

Ofttimes Asked Questions-----

Hither are commonly asked LaTeX questions and possible answers.

1 Installation
- one.1 I'1000 using a Macintosh. What practise I practise?
- one.ii How tin I install LaTeX on my website similar you lot have on the TeXer and your message board?
- 1.3 I've upgraded MiKTeX and now TeXnicCenter won't work
ii Coding Questions
- 2.1 My pages first likewise depression!
3 LaTeX Errors with Error Messages
- 3.one Extra alignment tab has been changed to \cr
- 3.2 LaTeX Fault: \begin{something} on input line line number ended past \end{document}
- 3.3 LaTeX Warning: Reference ... undefined on ....
- 3.4 LaTeX Alarm: In that location were undefined references.
- 3.5 Missing $ inserted
- 3.half-dozen Paragraph concluded before \end was complete.
- three.7 Delinquent statement?
- 3.8 Undefined control sequence.
4 Other LaTeX Errors
- 4.i Forget the error messages, when I effort to compile, it starts, only then just hangs. Nothing happens, and I can't practise anything. And then when I try to save the file, it won't permit me save it with the aforementioned name.
- four.2 I'1000 trying to use fancyhdr to make headers and footers, but they don't marshal with the rest of my page. The residual of the page extends beyond the header line to the right or left.
- 4.3 I'chiliad using referencing, but the page numbers or equation numbers aren't coming out correct.
5 Helpful Links
6 Meet Besides

Installation

I'grand using a Macintosh. What do I do?

Some Mac users use TeXShop, OzTeX or Textures (we wrote the Art of Trouble Solving textbooks in 1993 using Textures). The TeXShop is gratis. (Special thanks to Community member nr1337 for letting us know well-nigh TeXShop.)

How can I install LaTeX on my website like you take on the TeXer and your message lath?

We used LatexRender, which can be found hither. You will need to be able to install LaTeX and imagemagick on your server to use this. That site as well has a TeX Converter that doesn't require LaTeX and Imagemagick.

I've upgraded MiKTeX and at present TeXnicCenter won't work

Y'all need to tell TeXnicCenter where MiKTeX has moved to. If yous are using MiKTeX ii.7 information technology will probably be C:\Program Files\MiKTeX ii.seven\miktex\bin (this binder contains lots of exe files including latex.exe). You do this past clicking on Build, Define Output Profiles and clicking on the Wizard button in the bottom left corner. This video will show you what to do.

Coding Questions

My pages start also low!

Utilize \topmargin in the preamble as described here to set up the top margin smaller.

LaTeX Errors with Error Messages

When you lot use TeXnicCenter, a separate window contains output from LaTeX concerning various compiling information, including errors. Much of this text can be ignored. However, if you lot run into a symbol that looks like this:

And then you have a serious trouble.

If you have a whole string of these error messages, whorl dorsum until you hit the first one. Often i error will cause many others, so you should fix them starting with your commencement problem. Besides, the output from the compiler will give you a line number to aid you find the error in your lawmaking. In TeXnicCenter, the line number you are on is given at the lesser of the TeXnicCenter window on the right.

Here are some common fault messages, as well equally other possible problems, and a little information virtually what the trouble usually is. Virtually of these error messages volition announced right after the carmine symbol. Occasionally, they will announced 1-two lines earlier it. A few of these are simply warnings - they generate yellow triangles in TeXnicCenter when compiling.

You take also many &s in a row of a table or array or eqnarray.

LaTeX Error: \begin{something} on input line line number ended by \end{certificate}

You've left out the \end{whatever}. Mayhap y'all're building a table or an eqnarray that has a agglomeration of lines and you lot've forgotten the \end argument.

LaTeX Warning: Reference ... undefined on ....

You accept references in your document. You need to compile over again so LaTeX will be able to get the references correct.

LaTeX Warning: At that place were undefined references.

You lot have references in your certificate. You need to compile over again so LaTeX will be able to get the references right.

Missing $ inserted

You left out a $ or \[ or \] or $$ somewhere when you were writing text that needs to be in math mode.

Paragraph ended before \end was complete.

You are probably missing an } at the end of an \cease{something} statement.

Runaway statement?

A runaway argument occurs when you exit off a }.

Undefined command sequence.

You've tried to call a command that doesn't exist. Usually this is the consequence of a typo. Go to the line number mentioned in the error and look at all your commands. You lot'll probably find something like \rfac where you wanted \frac.

Other LaTeX Errors

Here are some problems that might occur that don't have error messages in the compiler. If your problem isn't solved by this page, consider posting on the AoPS bulletin board for help.

Forget the mistake messages, when I try to compile, information technology starts, merely and so just hangs. Zilch happens, and I can't do annihilation. So when I try to save the file, information technology won't let me save it with the same name.

Y'all probably take tried to use a packet that you lot haven't installed. For instance, if you effort \usepackage{fancyhdr} merely haven't installed the package, and so you'll hang TeXnicCenter then badly that you lot should just restart your computer (or, if you know how, kill the latex process you've started).

I'm trying to use fancyhdr to make headers and footers, just they don't align with the residuum of my page. The residual of the page extends across the header line to the right or left.

You probably take chosen \textwidth (or some other control dealing with page dimensions) after the \pagestyle command in your preamble. The \pagestyle and header and footer commands should come later all the page dimensions are set in the header.

I'm using referencing, but the page numbers or equation numbers aren't coming out correct.

You accept references in your document. You lot need to compile once again so LaTeX will be able to get the references correct.

Helpful Links

<url>index.php?f=123 Art of Problem Solving LaTeX forum</url> - enquire your question to our knowledgable LaTeX community.
<url>../LaTeX/AoPS_L_TeXer.php AoPS TeXeR</url> - the AoPS TeXer, which allows you lot to practice LaTeX typesetting and/or create pictures for your ain website.
TeX Users Group dwelling house page - a source for all matters TeX.
TeX Catalogue Online - a comprehensive database of LaTeX packages.
MiKTeX home folio - a popular TeX engine for Windows-based computers.
TeXnicCenter dwelling house page - a popular TeX editor for Windows-based computers.
MetaPost home page - MetaPost is a programming linguistic communication for creating graphic images for inclusion into LaTeX documents. It is not easy to install or use only the quality of the images produced by MetaPost is outstanding. (All of the Art of Trouble Solving's new Introductory textbooks used MetaPost to generate the diagrams.)

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