Re: integrals

• 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.