To clarify NuVoc's explanation, first I think I created the index list for
the current example.

   ,/>@{(i. 3);i. 2
0 0
0 1
1 0
1 1
2 0
2 1

Then pretending that y is i. 3 2, I applied the expression given in NuVoc
and it produces the expected "atom numbers".
   ($i. 3 2)#.  ,/>@{(i. 3);i. 2
0 1 2 3 4 5

I think this also confirms Cliff's observation.

On Wed, Dec 28, 2016 at 10:24 AM, Henry Rich <[email protected]> wrote:

> The Dictionary does discuss this, at http://www.jsoftware.com/help/
> dictionary/d530v.htm but unfortunately it doesn't mention that the result
> of u is the atom number.
>
> NuVoc in http://code.jsoftware.com/wiki/Vocabulary/curlyrtu#dyadic does
> describe the case correctly, though without the usual examples because the
> form is antiquated.
>
> Henry Rich
>
>
>
>
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