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Topic: Calculating matrix permanent
Replies: 9   Last Post: Feb 4, 2013 4:29 PM

 Messages: [ Previous | Next ]
 Patrick D. Rockwell Posts: 57 Registered: 12/12/04
Re: Calculating matrix permanent
Posted: Jan 26, 2013 12:29 AM

On Jan 25, 9:13 pm, Virgil <vir...@ligriv.com> wrote:
> In article
>  "Patrick D. Rockwell" <prockw...@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
>
>
> >                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".
>

No, I believe that the determinate is

2*6-4*9 = -24

> See  http://en.wikipedia.org/wiki/Determinant
>
> For more, including how tevaluate a 3 by 3 determinant.
> --

The above article showed
me how to do th 2 by 2 case
but I just couldn't understand
The notation for the rest of it.

Date Subject Author
1/25/13 Patrick D. Rockwell
1/26/13 Virgil
1/26/13 Patrick D. Rockwell
1/26/13 Virgil
1/26/13 Mike Terry
2/1/13 J.B. Wood
2/1/13 Herman Rubin
2/1/13 Butch Malahide
2/4/13 J.B. Wood
2/4/13 Butch Malahide