Multiple Integrals with Separate Limits

rsq_a · **Joined:** Mon, 26 Nov 2007 18:02:52 UTC **Posts:** 55

Hi,

There doesn't seem to be an easy-to-find answer to this question. I want to simply write down an expression with multiple integrals, each having its own limit. The key is that I want to use the nicer \int \iint \iiint, etc. of the amsmath package.

Using the regular \limits, this is the best you can do,

$\displaystyle \int\limits_a^b \int\limits_c^d \int\limits_e^f \int\limits_g^h,$

where there is a gap between the integrals.

But, \iint, \iiint, ...
$\displaystyle \iiiint\limits_a^b$

doesn't allow for multiple limits.

It's not a huge deal, but I have several quad-integrals and it's making for a messy formatting unless I can bring those integrals together.

Opalg · **Posted:** Sun, 1 Jun 2008 09:57:36 UTC

You can insert thin backspaces (\!) between the integrals to make them as close as you want. The code \displaystyle \int\limits_a^b \!\!\!\int\limits_c^d \!\!\!\int\limits_e^f \!\!\!\int\limits_g^h gives $\displaystyle \int\limits_a^b \!\!\!\int\limits_c^d \!\!\!\int\limits_e^f \!\!\!\int\limits_g^h$ .

If you're doing this on a large scale then you'll want to use a macro, such as

Code:

\def\quadint#1#2#3#4#5#6#7#8{\displaystyle \int\limits_{#1}^{#2} \!\!\!\int\limits_{#3}^{#4} \!\!\!\int\limits_{#5}^{#6} \!\!\!\int\limits_{#7}^{#8}}

rsq_a · **Joined:** Mon, 26 Nov 2007 18:02:52 UTC **Posts:** 55

Thanks! This works great

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Multiple Integrals with Separate Limits

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