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Answer : Try doing: \documentclass[12pt]{article} \usepackage{mathrsfs} \pagestyle{empty} \DeclareMathAlphabet{\mathpzc}{OT1}{pzc}{m}{it} \begin{document} The sample space is $\mathpzc{E}$. \end{document} See The Comprehensive LaTeX Symbol, page 68 for a pretty complete list of math fonts available and how to get to typeset them. You can also check A comprehensive review of mathematics in (La)TeX, page 95 onwards. There's also The LaTeX Font Catalogue - Calligraphic and Handwritten Fonts. You can try rsfs: The code \documentclass[12pt]{article} \usepackage{mathrsfs} \pagestyle{empty} \begin{document} The sample space is $\mathscr E$. \end{document} produces

Answer : How about using \left , \right , and \raisebox ? \newcommand{\bigslant}[2]{{\raisebox{.2em}{$#1$}\left/\raisebox{-.2em}{$#2$}\right.}} \begin{equation} \bigslant{\mathcal{O}_{(V',0)}}{\mathcal{O}_{(V,0)}} \end{equation} which gives The only problem is that I need to re-enter mathmode inside the \raisebox es. Anyone know how to avoid that? If you want to invoke the Someone Else's Problem principle, there's also the faktor package, which ostensibly was designed to do what you want, and which implements using the AMS symbol \diagup . But IMHO the slash is a bit small. For in-line expressions, you can also consider the nicefrac package, which makes both the "denominator" and "numerator" small. As already mentioned, there are two packages to solve this problem: xfrac - typeset fractions in the form n/d generally faktor - especially to typeset factor structures Here is a comparison between the \sfrac{n}{d} and \faktor{n}{d} ...