inverses are usually only applied to monadic functions, and b. _1 gives the result for the monadic definition which has no inverse for *.
9&* b. _1 0.1111111111111111&* ________________________________ From: Brian Schott <[email protected]> To: Programming forum <[email protected]> Sent: Monday, October 8, 2018 8:02 AM Subject: Re: [Jprogramming] *inv~ I get the following peculiar error message. * b. _1 |domain error | *b._1 JVERSION Engine: j807/j64/darwin Beta-f: commercial/2018-06-28T12:14:57 Library: 8.07.16 Platform: Darwin 64 Installer: J807 install InstallPath: /users/brian/j64-807 Contact: www.jsoftware.com On Sun, Oct 7, 2018 at 10:41 PM David Lambert <[email protected]> wrote: > My five / percent key is broken. Initially I was surprised that > > 9 % 6 > 1.5 > > 9 *inv 6 > 0.666667 > > Then not surprised remembering Dr. Iverson's insistence that division is > written unintuitively backward in common algebraic notation. > > See dyadic | for a reminder. (a remainder reminder?) > > (my four/dollar key has also failed. I enter a. then copy-n-paste. new > keyboard available later this month. Yes, I've also remapped otherwise > unused keys.) > > Cheers, Dave. > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm -- (B=) <-----my sig Brian Schott ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
