# Thread: Triple lower limits in summation sign (urgent)

1. ## Triple lower limits in summation sign (urgent)

Hi!

How do I get several limits below each other using the summation sign? I.e. $\displaystyle \sum\limits_{i \neq j} A_{ij}$, but I would also like $\displaystyle i, j \neq r, s$ and $\displaystyle i, j \neq s, r$ on two lines below the first limit...

Thanks!

2. Originally Posted by Jodles
Hi!

How do I get several limits below each other using the summation sign? I.e. $\displaystyle \sum\limits_{i \neq j} A_{ij}$, but I would also like $\displaystyle i, j \neq r, s$ and $\displaystyle i, j \neq s, r$ on two lines below the first limit...

Thanks!
$$\sum_ { \tiny \begin{array}{c} x>1 \\ y<8\\ u \in A \end{array} } x+y+u$$

gives:

$\displaystyle \sum_{ \tiny \begin{array}{c} x>1 \\ y<8\\ u \in A \end{array} } x+y+u$

3. Originally Posted by Jodles
How do I get several limits below each other using the summation sign? I.e. $\displaystyle \sum\limits_{i \neq j} A_{ij}$, but I would also like $\displaystyle i, j \neq r, s$ and $\displaystyle i, j \neq s, r$ on two lines below the first limit...
$$\sum_{\substack{i \neq j\\ i, j \neq r, s\\ i, j \neq s, r}} A_{ij}$$ gives

$\displaystyle \sum_{\substack{i \neq j\\ i, j \neq r, s\\ i, j \neq s, r}} A_{ij}$