*"0 2 versus */ It took us (Iverson and I) a while (years) to realize that you can do outer product with f"r. I believe that if we had realized it sooner I might have been able to talk Iverson into doing something else with the dyad f/ .
On Sun, Oct 15, 2017 at 12:08 PM, Cliff Reiter <[email protected]> wrote: > I think kr=: [: ,./^:2 */ is what (or close to it) we came up with then. > My retest 18 years later wasn't so good :). > kr=:[:,./ [: ,/"_1 */ > I like the expressiveness of Roger's *"0 2 > Thanks for the interesting ideas and solutions. Cheers, Cliff > > On 10/14/2017 12:36 PM, Roger Hui wrote: > >> http://code.jsoftware.com/wiki/Essays/Kronecker_Product >> >> Victor Cerovski had the [: ,./^:2 */ expression in 2010-02-26 >> >> >> >> On Sat, Oct 14, 2017 at 9:30 AM, robert therriault <[email protected] >> > >> wrote: >> >> Slight variation to Roger (talk about standing on the shoulders of >>> giants!) >>> >>> kr=: [: ,./^:2 */ >>> a kr b >>> 2 2 2 3 3 3 >>> 2 4 2 3 6 3 >>> 2 2 2 3 3 3 >>> 5 5 5 7 7 7 >>> 5 10 5 7 14 7 >>> 5 5 5 7 7 7 >>> >>> Cheers, bob >>> >>>> On Oct 14, 2017, at 9:10 AM, Roger Hui <[email protected]> >>>> >>> wrote: >>> >>>> kr=: [: ,./^:2 *"0 2 >>>> >>>> a kr b >>>> 2 2 2 3 3 3 >>>> 2 4 2 3 6 3 >>>> 2 2 2 3 3 3 >>>> 5 5 5 7 7 7 >>>> 5 10 5 7 14 7 >>>> 5 5 5 7 7 7 >>>> >>> ---------------------------------------------------------------------- >>> For information about J forums see http://www.jsoftware.com/forums.htm >>> >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
