# Help with a linear algebra rule

• Aug 5th 2013, 01:33 PM
LoneWolf
Help with a linear algebra rule
Hello,

Can anyone help to identify the name of this linear algebra rule:

Quote:

|A, B, C| = -(A cross C) dot B = -(C cross B) dot A
If it doesn't have a name, can anyone briefly tell me what it does or how it works or where should I look for an explanation, thank you very much.
• Aug 5th 2013, 02:07 PM
BobP
Re: Help with a linear algebra rule
It's called a triple scalar product.
• Aug 5th 2013, 03:09 PM
HallsofIvy
Re: Help with a linear algebra rule
And it is NOT from "linear algebra". The cross product is defined only in $R^3$, not in a general finite dimensional vector space.