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Math Help - Triple lower limits in summation sign (urgent)

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

    Hi!

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

    Thanks!
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by Jodles View Post
    Hi!

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

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

    gives:

    \sum_{ \tiny \begin{array}{c} x>1 \\ y<8\\ u \in A \end{array} } x+y+u
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  3. #3
    Super Member flyingsquirrel's Avatar
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    Quote Originally Posted by Jodles View Post
    How do I get several limits below each other using the summation sign? I.e. \sum\limits_{i \neq j} A_{ij}, but I would also like i, j \neq r, s and i, j \neq s, r on two lines below the first limit...
    [tex]\sum_{\substack{i \neq j\\ i, j \neq r, s\\ i, j \neq s, r}} A_{ij}[/tex] gives

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