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How can I reduce the size of the lower limit? I'd like to make it smaller.

$\lim\limits_{\Delta P \to 0}$

Adding \tiny doesn't seem to do anything.

enter image description here

2 Answers 2

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You can use \scriptscriptstyle for a smaller script size when in math mode.

\documentclass{article}
\begin{document}
$\lim\limits_{\scriptscriptstyle\Delta P \to 0}$
\end{document}

enter image description here

If one doesn't like the aspect-ratio constraint of the \scriptscriptstyle, one can start with the default \scriptstyle and scale the result, here by .7.

\documentclass{article}
\usepackage{graphicx}
\begin{document}
$\lim\limits_{\scalebox{.7}{$\scriptstyle\Delta P \to 0$}}$
\end{document}

enter image description here

4
  • hmm... that makes it vertically smaller, but doesn't change the horizontal scale that much (I wanted it not to stick out so much past the lim)
    – Jason S
    Commented Dec 31, 2021 at 18:10
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    @JasonS That is because, at least for the default computer-modern font, smaller fontsize is squeezed more vertically than horizontally (a choice of the font designer). Commented Dec 31, 2021 at 18:11
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    @JasonS You could combine aspects of the two answers with something like: $\lim\limits_{\scalebox{.7}{$\scriptscriptstyle\Delta P \to 0$}}$ Commented Dec 31, 2021 at 18:13
  • if I use scriptstyle rather than scriptscriptstyle it looks very good... if you edit your answer to include that as an alternative, I'll accept it.
    – Jason S
    Commented Dec 31, 2021 at 18:16
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I muddled my way through using scalebox, although I don't know how to get it to change the relative size rather than absolute:

$\lim\limits_{\scalebox{0.4}{$\Delta P \to 0$}}$

enter image description here

or this, which looks slightly better:

$\lim\limits_{\scalebox{0.6}{$^{\Delta P \to 0}$}}$

enter image description here

or even better:

$\lim\limits_{\scalebox{0.7}{$\scriptstyle\Delta P \to 0$}}$

enter image description here

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