[texhax] $^1/_2$ fraction appearance - another way?
William Adams
will.adams at frycomm.com
Wed Jul 11 18:47:44 CEST 2007
On Jul 11, 2007, at 11:40 AM, Bryan W. Lepore wrote:
> i like how $^1/_2$ appears - not sure how to describe this
> typesetting of
> a fraction - is there a better way - perhaps using $\frac{1}{2}$
> options?
That's what would be termed a typographer's, em or ``case'' fraction
(in hot metal typesetting it would've been a single sort pulled from
a composing case), also called a diagonal fraction --- the former and
last would probably be the best terms.
The other way would be termed a mathematician's or horizontal, or
vertical or en/nut (when it occupies an en space) fraction.
Further confusing the issue is the matter of ``built-up'' or
``piece'' fractions which would have been built up of individual
pieces and could come in either form.
Donald Knuth discusses this in an article on composing a cook booklet
which was reprinted in _Digital Typography_ from:
http://www.tug.org/TUGboat/Articles/tb06-1/tb11knut.pdf
and even provides a (Plain) TeX macro for this.
Certain fonts will provide diagonal fractions, e.g.:
\documentclass{minimal}
\usepackage{mathptmx}
\usepackage{textcomp}
\begin{document}
\textonehalf
$\frac{1}{2}$
\end{document}
And there's a package called ``nicefrac'' which sort of does this
(the diagonal isn't angled enough to my mind in most fonts). This is
mentioned in the Comprehensive LaTeX Symbol list:
http://www.ctan.org/tex-archive/info/symbols/comprehensive/symbols-
a4.pdf
William
--
William Adams
senior graphic designer
Fry Communications
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