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**To**:*math-font-discuss@cogs.susx.ac.uk***Subject**:**Re: integrals****From**:*alanje@cogs.susx.ac.uk (Alan Jeffrey)***Date**: Fri, 6 Aug 93 13:29 BST

>Can somebody tell me why there is a small integral in cmex, and in cmsy. >\int refers to the one in cmex. It's used in areas of mathematics where integration is seen as a function from a set to a number, so: \[ \smallint\{e_i \mid i \in I} \] rather than: \[ \int_{i \in I} e_i \] Similarly, some mathematicians use \Sigma and \Pi rather than \sum and \prod. (Jeremy, have you got references for this usage, this is your sort of field?) Alan.

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