Exactly. So simple.Thanks!
> Date: Wed, 11 Dec 2013 11:43:15 -0500 > From: [email protected] > To: [email protected] > Subject: Re: [Jprogramming] J and Group Theory > > Is this what you need? > > #:i.4 > 0 0 > 0 1 > 1 0 > 1 1 > 'a b c d'=: #:i.4 > a > 0 0 > b > 0 1 > c > 1 0 > d > 1 1 > > > On Wed, Dec 11, 2013 at 11:36 AM, Jon Hough <[email protected]> wrote: > > > Hi, > > > > > > I saw in the J labs the example for the group Z_4 (cyclic group of order > > 4). > > > > > > > > I am now trying to ape this method to create the group Z_2 x Z_2 (direct > > product of cyclic group order 2 with itself). > > > > This is what I have done so far: > > > > > > a =: 0 0 > > b =: 0 1 > > c =: 1 0 > > d =: 1 1 > > > > > > f =: 2&|@+ > > > > > > This is the group operator, essentially mod 2 addition. > > > > Q: How can I create a,b,c,d more simply? Perhaps with a single verb, > > instead of explicitly creating each element? > > > > > > > > e.g. a verb or train that returns: > > 0 0 > > 0 1 > > 1 0 > > 1 1 > > > > Thanks for your patience. > > > > Jon > > > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > > > -- > *Kenneth Lettow* > *Director of Web Analytics and Market Intelligence* > *ThomasNet.com* > Five Penn Plaza, 8th Floor > New York, NY 10001 > *: [email protected] > *(*: 212.290.8713 > www.thomasnet.com > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
