--- On Fri, 5/16/08, Mike Powell <[EMAIL PROTECTED]> wrote:
> If you construct a lower triangular matrix from your
> original q, you
> can do the evaluations with an insertion. For example:
>
> q =: 4 2 1 3 1 2
>
> tri =: 3 : 0
> |:(-i.$y)|.!.0"0 1 y
> )
>
> m =: tri q
> 4 0 0 0 0 0
> 2 4 0 0 0 0
> 1 2 4 0 0 0
> 3 1 2 4 0 0
> 1 3 1 2 4 0
> 2 1 3 1 2 4
Also
]\.&.|. 4 2 1 3 1 2
4 0 0 0 0 0
2 4 0 0 0 0
1 2 4 0 0 0
3 1 2 4 0 0
1 3 1 2 4 0
2 1 3 1 2 4
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