> From: Dan Bron <[EMAIL PROTECTED]> > > I wrote: > > #. <==> 2&$: : (p.~ |."1) NB. ambivalent, for all scalar x > > Because an equation's an equation: > > p. <==> (#."0 1 |."1)~ NB. dyadically, for all open x > > Turns out all a polynomial's really just a base-converter, under the covers ;)
This is referred to as Ruf-Horn method in "About polynomials" by Gianluigi Quario, Vector 23 No 4. http://www.vector.org.uk/archive/v234/quario.htm Fractional bases are known to be used in APL. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
