# The Diagonal

• February 15th 2010, 09:07 AM
Swlabr
The Diagonal
What is the standard notation for the diagonal of a matrix? I believe it is $\Delta$, as with the cartesian product, but I am not sure.

If so, is there another notation for it? As I'm using $\Delta$ for something else...
• February 15th 2010, 05:53 PM
gotpho
Standard Notation?

I believe delta is used when your looking for the determinant of a matrix.
• February 16th 2010, 01:18 AM
Swlabr
Quote:

Originally Posted by gotpho
Standard Notation?

I believe delta is used when your looking for the determinant of a matrix.

I've never heard of that - can you perhaps give an example?