Math & Science ⇒ Really small Fractions

[biddlesby2]

Hi all,

I am trying to use the fraction 1/2 in index subscripts; for example

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 \[ x_{i-\tfrac{1}{2}}, x_{i+\tfrac{1}{2}} \]

(not sure how to get that code displaying as latex)

I'd normally use \tfrac for this, but it just isn't small enough! I have tried \scriptstyle and \scriptscriptstyle, but still no joy.

Any ideas? I am wondering if I have to install a new font and then use a symbol in there, although I found nothing particularly pleasant-looking in the comprehensive symbol list.

I need the solution to work in both inline and block equations.

Thanks for your help

[Frits]

Maybe with slanted fractions? Call the package xfrac (or siunitx) in your preamble and then:

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\[ x_{i-\sfrac{1}{2}}, x_{i+\sfrac{1}{2}} \]