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Re: hypercube rotations

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On 2016-07-08, luser droog <luser.droog@gmail.com> wrote:
> A year or two ago I tried to beef-up my vector analysis skills
> by reading the very interesting History of Vector Analysis.
> I can now spell Ausdehnungslehre, but I never figured out how
> to do a Grassman product. Quaterions freak me out. For that 
> matter, the complex plane still freaks me out. I think I need
> to take a math class.

I wrote:
> I posted a followup to this, but I'm not sure it got through
> because my newsserver; well sure it displays the title, but when
> I try to get my post it says  Article 23453 is unavailable.  :-(
> So if it has got through to you all, could someone repost it so
> I can save my posting ? And if it hasn't got through to you all,
> I'll try to remember what I said and followup again...
Well groups.google.com hasn't got it either, so here goes:

The most helpful intro to Grassman products I know is
Roger Penrose "The Road To Reality" pp.211-215, 227-229.
He's a great explainer, but it's a heavy book, 1094 pages...
Not that I've ever actually _used_ a Grassman product :-)  

The complex plane is not scary, in fact Roger Penrose mostly exists
in the complex plane.  He introduces it in pp.81-83, 87-88 ...

Wikipedia is really authoritative in this kind of thing,
but it's often overwhelming, and
  https://en.wikipedia.org/wiki/Exterior_algebra
is a example of that :-(

Regards,  Peter

P.S. I've never used a quaternion either, and mainly know them from
  http://math.ucr.edu/home/baez/octonions/
by John C. Baez who I always have to introduce to people with a
"not to be confused with Joan Baez": well, it turns out that not
everything is coincidence;  his uncle Albert Baez, also a physicist,
was the father of Joan Baez.  (Off-topic apologies)

-- 

Peter Billam    www.pjb.com.au    www.pjb.com.au/comp/contact.html

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hypercube rotations luser- -droog <mijoryx@yahoo.com> - 2016-06-20 12:34 -0700
  Re: hypercube rotations luser droog <luser.droog@gmail.com> - 2016-06-22 22:11 -0700
    Re: hypercube rotations Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-06-22 23:48 -0700
    Re: hypercube rotations JohnF <john@please.see.sig.for.email.com> - 2016-06-24 04:28 +0000
      Re: hypercube rotations luser droog <luser.droog@gmail.com> - 2016-07-08 01:43 -0700
        Re: hypercube rotations Peter Billam <peter@www.pjb.com.au> - 2016-07-14 09:41 +0000
        Re: hypercube rotations Peter Billam <peter@www.pjb.com.au> - 2016-07-15 06:19 +0000
          Re: hypercube rotations Bogus@Embarq.com (Steve) - 2016-07-15 12:15 +0000
          Re: hypercube rotations JohnF <john@please.see.sig.for.email.com> - 2016-07-16 00:14 +0000
            Re: hypercube rotations luser droog <luser.droog@gmail.com> - 2016-07-15 21:42 -0700
              Re: hypercube rotations JohnF <john@please.see.sig.for.email.com> - 2016-07-16 05:01 +0000
          Re: hypercube rotations luser droog <luser.droog@gmail.com> - 2016-09-13 18:14 -0700
        Re: hypercube rotations Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-08-05 00:10 -0700
    Re: hypercube rotations luser droog <luser.droog@gmail.com> - 2016-09-13 18:30 -0700

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