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Re: Calculating matrix permanent
Posted:
Jan 26, 2013 12:29 AM
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On Jan 25, 9:13 pm, Virgil <vir...@ligriv.com> wrote:
> In article
> <3cd635d3-8c00-4c8f-b5b3-af9c45759...@v9g2000pbi.googlegroups.com>,
> "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
>
> > 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".
>
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.
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