In the J dictionary page, it has already defined monad case recursively as
DET=: 2 : 'v/@,`({."1 u . v $:@minors)@.(0<{:@$) @ ,. "2'
minors=: }."1 @ (1&([\.))
On Sep 15, 2017 7:37 PM, "Rudolf Sykora" <[email protected]> wrote:
> On 15 September 2017 at 12:50, Erling Hellenäs <[email protected]>
> wrote:
> > http://code.jsoftware.com/wiki/Vocabulary/dot
> >
> > http://www.jsoftware.com/help/dictionary/d300.htm
>
> unfortunately, I cannot find a serious definition at either place.
> (And I still think the definition is not present in the mentioned
> dictionary.)
>
> E.g. what will
> + . - i. 2 3 4
> do and why?
>
> Thanks
> Ruda
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