Virgil
Posts:
9,012
Registered:
1/6/11


Re: Calculating matrix permanent
Posted:
Jan 26, 2013 12:13 AM


In article <3cd635d38c004c8fb5b3af9c45759521@v9g2000pbi.googlegroups.com>, "Patrick D. Rockwell" <prockwell@thegrid.net> wrote:
> I've read how to calculate the permanent of a matrix, > but I found the notation hard to understand so I'd > Like a practical demonstration. For 2 by 2 matrices > It's easy. For example, the permanent of > > > 2 4 > 9 6 > > Is 2*6+4*9=36+12=48 > > But what about > > 5 3 1 > 8 2 4 > 7 9 6 > > What is48 the permanent of the above matrix > and how do you calculate it?
What you have calculated for your 2 by 2 matrix is its DETERMINANT, not its "permanent". See http://en.wikipedia.org/wiki/Determinant
For more, including how tevaluate a 3 by 3 determinant. 

