What Are the ## LaTeX Symbols?

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Discussion Overview

The discussion revolves around the use of LaTeX symbols and tags within the Physics Forums platform, specifically comparing the \## symbols to other LaTeX formatting options like \[itex\] and \[tex\]. Participants explore the functionality and equivalence of these tags in rendering mathematical expressions.

Discussion Character

  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant questions the purpose of the \## symbols when quoting equations and asks if they are equivalent to \[itex\].
  • Some participants confirm that the \## symbols are indeed equivalent to \[itex\] tags and serve as a shortcut for typing LaTeX.
  • Another participant notes that \[tex\] and \$ symbols are also equivalent, suggesting a broader equivalence among these tags.
  • There is a discussion about using the \begin{equation} environment, with one participant expressing uncertainty about its compatibility with the forum's LaTeX implementation.
  • A later reply indicates that the \begin{equation} environment works when copied and pasted, but there may be issues with earlier tags affecting its rendering.
  • One participant mentions attempting to label an equation but notes that automatic numbering does not occur, speculating that this feature may depend on additional LaTeX packages not available on the site.

Areas of Agreement / Disagreement

Participants generally agree on the equivalence of the \## symbols and \[itex\] tags, but there remains uncertainty regarding the functionality of the \begin{equation} environment and the absence of automatic labeling and numbering for equations.

Contextual Notes

Limitations include potential confusion caused by the use of multiple LaTeX tags and the lack of certain LaTeX packages that may affect functionality, such as automatic equation numbering.

BruceW
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what are the ## latex symbols??

hi all,
I was wondering, whenever I quote someone's equations, it comes up something like \##\frac{x}{y}\## with these \## symbols... But I have been using \[itex\]\frac{x}{y}\[/itex\]. So what are these \## symbols all about? Are they equivalent to [itex]?<br /> <br /> p.s. I've used \[itex]and \## so that the computer doesn't just turn it into latex[/itex][/itex]
 
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Yes, the two are equivalent on PF. Similarly \[tex]amd \$$ are equivalent.[/tex]
 
Yes, they are equivalent to itex tags. It's kind of a shortcut. Similarly, you can type two dollar signs instead of an opening or closing tex tag. Edit: D'oh. I'm always too slow.
 
ah, thanks dudes. /## is much easier to type than /[tex] I wonder if I can use<br /> [tex]\begin{equation} \frac{x}{y} \end{equation}[/tex]<br /> ah, guess not.[/tex]
 
That one works when I copy and paste it.
[tex]\begin{equation} \frac{x}{y} \end{equation}[/tex] It also works without any tags at all. (The begin and end are sufficient).
\begin{equation} \frac{x}{y} \end{equation} Maybe MathJax was confused by the /## and /[tex]earlier in your post? Let's try it again.<br /> [tex]\begin{equation} \frac{x}{y} \end{equation}[/tex]<br /> Yes, that seems to be the problem.[/tex]
 
oh cool, thanks.
[tex]\begin{equation} \label{eq:practice} \frac{x}{y} \end{equation}[/tex]
I also tried to label it, but it did not do any automatic label numbering (of the equation). I guess that would be part of some latex package which is not included for the latex of this site. (or something like that. I'm not so knowledgeable about this kind of stuff). It's no problem really, I was just trying it out to see.

I labeled it [itex]\ref{eq:practice}[/itex]
 
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