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as image


doesn't get desired thing.

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up vote 4 down vote accepted

can be used as \Infty{123} or \Infty8




enter image description here

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@Herbert: Thanks. However, when the \infty symbol is replaced by \centerdot, the dot doesn't align with digit eight yet. – dearmath May 16 '11 at 10:22
@dearmath: sure, it does! – Herbert May 16 '11 at 10:41
@Herbert: \documentclass{article} \usepackage{amssymb} \newsavebox\MBoxA \newsavebox\MBoxB \def\CDot#1{\sbox\MBoxA{$\centerdot$}\sbox\MBoxB{$#1$} \raisebox{\dimexpr(\ht\MBoxB-\ht\MBoxA)/2\relax}{$\centerdot$}#1} \begin{document} \Huge$\CDot8$ \end{document} image could see link – dearmath May 16 '11 at 10:59
@dearmath: the bounding box is wrong. Use package MnSymbol instead of amssymb, or redefine \centerdot with the definition of MnSymbol – Herbert May 16 '11 at 11:03
@Herbert: Thanks a lot. – dearmath May 16 '11 at 11:10

You can measure the height of a figure eight:


I get the same result, by trial and error, with


This assumes, as usual, that \mathsurround is zero; a safer definition would be

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