Others have already covered this.. but so had I:

ATop=:2 :0
 ([: u v)"v
)

   (|: ATop *:) i. 2 2
0 1
4 9
   (|: ATop *:)
([: |: *:)"0 0 0


-- 
Raul

On Sun, Feb 5, 2012 at 2:41 PM, km <k...@math.uh.edu> wrote:
>   (|: @ *:) i. 2 2
> 0 1
> 4 9
>
> Composition?
>
> Sent from my iPad
>
>
> On Feb 5, 2012, at 8:16 AM, Boyko Bantchev <boyk...@gmail.com> wrote:
>
>> On 5 February 2012 14:11, Linda Alvord <lindaalv...@verizon.net> wrote:
>>> My goal has been to translate from expressions with  @  to ones without it.
>>
>> You also mentioned eliminating @ in another thread.
>> Why do you consider it important?
>> @ is the composition of functions – and is composition not the most
>> natural operation on functions that one could think of?
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