# [SOLVED] Multi-Indexed Sums/Intersection/Unions, etc.

• November 19th 2009, 10:19 AM
lvleph
[SOLVED] Multi-Indexed Sums/Intersection/Unions, etc.
I want to do a multi-indexed sum, I have figured out one way to do it but it is ugly. Can someone help me fix the following so that the text is of equal size?
$\sum_{\stackrel{k=1}{k\ne j}}^n A(i,k) \cdot 0_R$
• November 19th 2009, 10:50 AM
Opalg
Quote:

Originally Posted by lvleph
I want to do a multi-indexed sum, I have figured out one way to do it but it is ugly. Can someone help me fix the following so that the text is of equal size?
$\sum_{\stackrel{k=1}{k\ne j}}^n A(i,k) \cdot 0_R$

$\sum_{\scriptstyle k=1\atop\scriptstyle k\ne j}^n A(i,k) \cdot 0_R$ (\sum_{\scriptstyle k=1\atop\scriptstyle k\ne j}^n A(i,k) \cdot 0_R).
• November 21st 2009, 12:51 AM
flyingsquirrel
Quote:

Originally Posted by lvleph
I want to do a multi-indexed sum, I have figured out one way to do it but it is ugly. Can someone help me fix the following so that the text is of equal size?
$\sum_{\stackrel{k=1}{k\ne j}}^n A(i,k) \cdot 0_R$

Use \substack instead of \stackrel : \sum_{\substack{k=1\\ k\ne j}}^n A(i,k) \cdot 0_R gives $\sum_{\substack{k=1\\ k\ne j}}^n A(i,k) \cdot 0_R$