I believe wikipedia refers to these as k-permutations (of n) and the example given by Ric agrees with my memory of what I learned as permutations of n items taken k at a time.
https://en.wikipedia.org/wiki/Permutation#k-permutations_of_n On Sat, Aug 25, 2018 at 11:07 PM 'Pascal Jasmin' via Programming < [email protected]> wrote: > I agree that previous dyadic result was non-sensical. New behaviour is > reasonable. Though the name perm(utations) is not perfect. "permutations > of the combinations x of y". Could be seperate dyadic verb "permcomb" > > > > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
