Square it and you have a 35th way to make an identity matrix! LOL.
On Tue, 2010-08-24 at 14:07 +0200, R.E. Boss wrote: > ([: #: 2 ^ i.)4 > 0 0 0 1 > 0 0 1 0 > 0 1 0 0 > 1 0 0 0 > > Is this one of the few(?) occasions where generating the 'anti identity' is > shorter than the main identity? > c.f. > http://www.jsoftware.com/jwiki/Essays/Identity%20Matrix#BinaryRepresentation > > > R.E. Boss ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
