Re: Pythagorean Primitives

In article <sm7r5k1qn6jir93tn8jl4nlo75j5uqiufq@4ax.com>,
Charlie Roberts  <croberts@gmail.com> wrote:

Well, the goose may have finally been cooked (for me, at least).
>
"The number of "primitive" triples for any side of a Pythagorean
triple is 2^(n-1), where n is the number of unique prime factors of
that side length. There may be more imprimitives than this but not
primitives."
>
but no proof (or pointers to a proof) is given.

Hello.  Yesterday, I posted some maths waffle in a reply elsewhere in
this thread.  I mention it partly in case you missed it, but partly in
case it hasn't shown up at all.  (I haven't posted to a newsgroup for
ages and might have got it wrong!)

Gareth