Also perhaps a gerund reduction approach, but you would need to replicate the 
arguments …

   7 ([ + [ - [ * ]) 5
_21


   +`-`*/7 7 7 5
_21

You could wrap this in a function also to do the replication based on $gerund.

   foo
4 : ' r=:x/(($x),1)#y'

   (+`-`*) foo 7 5
_21

Regards Rob


> On 12 Jul 2016, at 11:04 PM, Raul Miller <[email protected]> wrote:
> 
> No, but you can make one.
> 
> For example:
> 
>   x(((<<<_2){{.,@,.}.)[`u`v`w`...`])y
> 
> I hope this helps.
> 
> -- 
> Raul
> 
> 
> On Tue, Jul 12, 2016 at 8:38 AM, dahn oak <[email protected]> wrote:
>> Hello, is there any language cunstruction that is equivalent to:
>>   x u x v x w ... y
>> where x and y are the arguments of the construction and u,v,w,... is a 
>> sequence
>> of dyadic verbs?
>> 
>> I just don't want to duplicate my x argument many times. Specifically, I want
>> to do something like 10,~10,.~10,10,.y where y is a scalar matrix to make a
>> "border" for it (number 10).
>> 
>> dahn oak - [email protected]
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