1. ## 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?

2. Originally Posted by wik_chick88
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

3. Originally Posted by Chris L T521
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.

4. Originally Posted by wik_chick88
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:

$$\bigcirc \hspace{-1.4em} \int \hspace{-.8em} \int$$ gives $\bigcirc \hspace{-1.4em} \int \hspace{-.8em} \int$

5. Originally Posted by mr fantastic
Here is a cheat:

$$\bigcirc \hspace{-1.4em} \int \hspace{-.8em} \int$$ 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?

6. Originally Posted by wik_chick88
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

7. Originally Posted by wik_chick88
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:

$$\bigcirc \hspace{-1.4em} \int \hspace{-.8em} \int_S$$

RonL

8. Originally Posted by wik_chick88
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 $$\bigcirc \hspace{-1.4em} \int \hspace{-.8em} \int\limits_{S}$$

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 ......