On Fri, 7 Jul 2006, Mark D. Niemiec wrote:
However, 1 is not the right identity. (x^1 + 1) is 1 larger than x for all x. It is only an identity if x e. _ __ _.
Um, right. So I've messed up the example, I thought I would. Sorry. Second attempt. u =: (<:@:[ (+ + [ ^ ]) ])"0 This has 0 as its right identity. The left identity is 1, but it works only for positive numbers. -- ambrus ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
