MathsIsFun, can you enable the cfrac command?

Ah, I thought we could only use latex command that you "approve" (or something of the sort).  It should be a standard command... not sure why it doesn't work.

You don’t need \cfrac. Guess what. I just discovered \dfrac!

Last edited by JaneFairfax (2008-07-10 20:24:05)

\dfrac is the display style version of \frac.  It is equivalent to doing:

\displaystyle \frac{stuff}{stuff}

Display style is meant for mathematical symbols not to be inlined with text.  \sum with give you a small summation sign about the size of the line, while \displaystyle \sum will give you a much larger one, which the indicies properly underneath and on top instead of the typical subscript and superscript.

If you aren't having it inline with text, then a good idea is to use \begin{equation} ... \end{equation}.  This will not only put you in "displaystyle" mode, but also center everything.

Back on topic... our dfrac is actually cfrac (not sure how that happened...).  Take a look at this link.

I am working on a LaTeX project in which I need a weird new symbol called a 'mark' or 'cross'. See http://en.wikipedia.org/wiki/Laws_of_Form to see how it looks and how it is used (hit the link for section 5.5.2 Sentential logic).

I'm looking for something that would act much like the square root sign that can easily be done in LaTeX. That is, the \sqrt{} figures out how high the 'checkmark' part should be and how wide the 'overbar' part should be when it is nested, e.g.

\sqrt{\sqrt{A\sqrt{B}}\sqrt{\sqrt{A}B}}

The 'checkmark' on the left of the \sqrt sign should be a simple vertical bar on the right side, with the 'overbar' part the same. Do I need the CODE that makes the \sqrt{} work like it does so I can modify it to this purpose?

That’s amazing!

Last edited by quittyqat (2009-07-22 09:52:17)

Click "quote".