Here's a better summary not that there is a major diagonal of real numbers:
ishermitian=: -:[:+|: hft=: (+ +@|: * >/~@i.@#) NB. Ai ]B =: 3 3 $ 0 _1j2 0 0 _3 4j_5 0 0 6 0 _1j2 0 0 _3 4j_5 0 0 6 hft B 0 _1j2 0 _1j_2 _3 4j_5 0 4j5 6 ishermitian hft B 1 hft =: + +@|:@(- ] * =@i.@#) NB. Kip ishermitian hft B 1 hft=: (% 1 + =@i.@#)@:+ +@|: NB. Raul ishermitian hft B 1 hft=: 0&=`(,: +@|:)} NB. Henry ishermitian hft B 1 hft=:hft=: 13 :'y+(y=0)*+|:y' NB. Linda ishermitian hft B 1 Linda -----Original Message----- From: programming-boun...@forums.jsoftware.com [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Linda Alvord Sent: Friday, January 18, 2013 9:38 PM To: programm...@jsoftware.com Subject: Re: [Jprogramming] Hermitian from triangular Thanks, He even includes induction. Linda -----Original Message----- From: programming-boun...@forums.jsoftware.com [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Roger Hui Sent: Friday, January 18, 2013 10:35 AM To: Programming forum Subject: Re: [Jprogramming] Hermitian from triangular See section 1.4 and section 4 of *Notation as a Tool of Thought<http://www.jsoftware.com/papers/tot.htm> *. On Fri, Jan 18, 2013 at 3:13 AM, Raul Miller <rauldmil...@gmail.com> wrote: > On Fri, Jan 18, 2013 at 5:33 AM, Linda Alvord > <lindaalv...@verizon.net> > wrote: > > What a simple way to write a proof in J. > > I like grouping equalities together, vertically on a page, with > explanatory text separating the groups. (If I need anything more than > short NB. quips to distinguish equalities, my explanation probably was > not good enough.) > > -- > Raul > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm