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Math Help - double integral sign

  1. #1
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    double integral sign

    hi i need to enter in a symbol which is a double integral sign with a circle through both and an S down the bottom. similar to \oint but with 2 integral signs and the o goes between both signs. does this make sense?
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  2. #2
    Rhymes with Orange Chris L T521's Avatar
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    Quote Originally Posted by wik_chick88 View Post
    hi i need to enter in a symbol which is a double integral sign with a circle through both and an S down the bottom. similar to \oint but with 2 integral signs and the o goes between both signs. does this make sense?
    There are special LaTeX packages in which you can use those. However, I don't believe we have them installed at the forums.

    By the way, doesn't that type of integral represent a volume integral?

    --Chris
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    Quote Originally Posted by Chris L T521 View Post
    There are special LaTeX packages in which you can use those. However, I don't believe we have them installed at the forums.

    By the way, doesn't that type of integral represent a volume integral?

    --Chris
    correct. it is part of a question about a cube and its surface bounded by planes. ill try again to insert the question into the post.
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  4. #4
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    Quote Originally Posted by wik_chick88 View Post
    hi i need to enter in a symbol which is a double integral sign with a circle through both and an S down the bottom. similar to \oint but with 2 integral signs and the o goes between both signs. does this make sense?
    Here is a cheat:

    [tex]\bigcirc \hspace{-1.4em} \int \hspace{-.8em} \int [/tex] gives \bigcirc \hspace{-1.4em} \int \hspace{-.8em} \int
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    Quote Originally Posted by mr fantastic View Post
    Here is a cheat:

    [tex]\bigcirc \hspace{-1.4em} \int \hspace{-.8em} \int [/tex] gives \bigcirc \hspace{-1.4em} \int \hspace{-.8em} \int
    thanks heaps do you know how i add the S down the bottom ie. it looks like a bottom limit?
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    Quote Originally Posted by wik_chick88 View Post
    thanks heaps do you know how i add the S down the bottom ie. it looks like a bottom limit?
    Here's a thread I just found that's got stuff better than mine: http://www.mathhelpforum.com/math-he...-integral.html
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    Quote Originally Posted by wik_chick88 View Post
    thanks heaps do you know how i add the S down the bottom ie. it looks like a bottom limit?
    \displaystyle  A \hspace{-0.8em} \int F

    Standard subscript:

    [tex]\bigcirc \hspace{-1.4em} \int \hspace{-.8em} \int_S [/tex]

    RonL
    Last edited by CaptainBlack; August 31st 2010 at 12:07 AM.
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    Quote Originally Posted by wik_chick88 View Post
    thanks heaps do you know how i add the S down the bottom ie. it looks like a bottom limit?
    Like this: \bigcirc \hspace{-1.4em} \int \hspace{-.8em} \int\limits_{S}

    The code is [tex]\bigcirc \hspace{-1.4em} \int \hspace{-.8em} \int\limits_{S} [/tex]

    You could probably add the \limits_{S} bit to the code in the thread I previously referenced.


    Edit: I just saw that CaptainB provided the more obvious and simpler alternative. So it's really just a matter of where you like your S to be. I assumed you'd tried that and (like Chris, who showed me the \limits command a while ago) didn't like it ......
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