*It may be difficult to find the justification for Rob's fine answer in the
Dictionary.*
*I found the following link helpful, especially it's statement, "... **a
train of two adverbs produces an adverb ..."*

*http://www.jsoftware.com/help/dictionary/dictf.htm
<http://www.jsoftware.com/help/dictionary/dictf.htm>*

And then the trace feature suggests the order of execution of the adverbs.

   load'trace'
      trace'+ /\ 1 2 3 4 5'
 --------------- 3 Adverb -----
 +
 /
 +/
 --------------- 3 Adverb -----
 +/
 \
 +/\
 --------------- 0 Monad ------
 +/\
 1 2 3 4 5
 1 3 6 10 15
 ==============================
1 3 6 10 15



On Mon, Jul 30, 2018 at 6:13 PM, Piet Google <[email protected]> wrote:

> Very clear.   Thank you.
> Are you relying on p.70 part b) of the old "J introduction and dictionary”?
> I’ve spent hours trying to get my head around this page.
> Wonderfully cryptic, enlightening and obscure — all at the same time.
>
> > On 31 Jul 2018, at 6:56 am, 'robert therriault' via Programming <
> [email protected]> wrote:
> >
> > Good question Piet,
> >
> > I needed to think a bit about how adverbs can be written tacitly. Others
> are considerably more advanced, but here goes:
> >
> >    at=: 1 : '%:@:(u/) ' NB. Original adverb
> >   + at i. 8
> > 5.2915
> >   a1t=: %:@:     NB. First part of adverb is also an adverb
> >   +/ a1t i. 8
> > 5.2915
> >   a2t=: /        NB. Second part of adverb - obviously an adverb
> >   + a2t a1t i. 8
> > 5.2915
> >   a3t=: / (%:@:) NB. Two adverbs together form a new adverb -
> parenthesis are required
> >   + a3t i. 8
> > 5.2915            NB. Tacit "a3t" has the same result as explicit "at"
> >
> > Cheers, bob
> >
> >> On Jul 30, 2018, at 1:32 PM, Piet Google <[email protected]> wrote:
> >>
> >> t=: 1 : '%:@:(u/) y'
> >
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
>
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>



-- 
(B=) <-----my sig
Brian Schott
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm

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