I enjoyed the Essay and went on to view the embedded Essay here which was fascinating, also.
http://www.jsoftware.com/jwiki/Essays/Symmetric%20Array However, I could not follow one step of the Symmetric Array Essay. " and so on; similarly, if P (] -: |:)"1 _ A , then A -: p0|:p2|:p1|:A A -: p0|:p4|:p2|:p0|:p7|:p2|:A for all sequences from the set of permutations P . " I assume the p0, p2, ... are permutation vectors of P, but that's as far as I can get. On Mon, Oct 10, 2011 at 12:59 AM, Roger Hui <[email protected]> wrote: > http://www.jsoftware.com/jwiki/Essays/Reflexive > -- (B=) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
