[Tex/LaTex] Companion for \ell


In mathematical writing I often use \ell when I need an 'ell' variable, because l looks like a 1. In fact, I expect this is why the symbol exists :).

Now, it often happens that my \ell stands for (l)eft, and I would like to have a symbol for an 'r' variable that stands for (r)ight.

Is there a simple way to make a cursive looking r?

Best Answer

The "Mathematical Script Small R" is just a Unicode character, so if you can enter it in your editor, and you have a font that includes a suitable representation, then it's as simple as this:

small r: 𝓇  there.

I'm using MacVim and xelatex with TexLive 2013 here and I get this

small curly r

On the Mac you can get the symbol from the character viewer. This is the information it gives about it.

Unicode: U+1D4C7 (U+D835 U+DCC7), UTF-8: F0 9D 93 87

And if entering the character from the viewer is too laborious you can always define a little macro for it:


(This feels vaguely like something for http://www.talklikeapirate.com/)