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
> ----------------------------------------------------------------------
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