Experiments: (A :. B"0) b. _1 B :.A"0 100&(A :. B) b. _1 100&B 100&(A :. B"0) b. _1 |domain error | 100&(A :.B"0)b._1 100&(A"0 :. (B"0)) b. _1 100&(B"0)
Roger doesn't invert m&(u :. v"r), but he does handle a lot of other forms. 100&(+"0) b. _1 |domain error | 100&(+"0)b._1 He doesn't invert m&(u"r) either. Or: 100&([EMAIL PROTECTED]) b. _1 |domain error | 100&([EMAIL PROTECTED])b._1 [EMAIL PROTECTED] b. _1 [EMAIL PROTECTED] Maybe in a future release? m&u used not to be invertible at all. Henry Rich > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of david alis > Sent: Thursday, September 04, 2008 1:27 PM > To: Programming forum > Subject: [Jprogramming] Re: Exploring assigned inverses > > The expression > 3 +&.^.4 > stands for > Antilog (log 3) + (log 4) > > Irrespective of the rank of antilog it is applied only once because > both arguments are a single number. > > I think Raoul is right - something isn't working properly when the > rank conjunction is used to assign zero rank to the C verb. > > 10 ;&.(C"0 1) 20 > A-y > A-y > B-y > +---+-----------------+ > |B-y|+--------+---+--+| > | ||+---+--+|A-y|20|| > | |||A-y|10|| | || > | ||+---+--+| | || > | |+--------+---+--+| > +---+-----------------+ > 10 ;&.(C"1 0) 20 > A-y > A-y > B-y > B-y > B-y > +---+----------+ > |B-y|+--------+| > | ||+---+--+|| > | |||A-y|10||| > | ||+---+--+|| > | |+--------+| > +---+----------+ > |B-y|+---+ | > | ||A-y| | > | |+---+ | > +---+----------+ > ---------------------------------------------------------------------- > For information about J forums see > http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
