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Topic: Is there a compact form for n-tuple relativistic additions of
velocities?

Replies: 7   Last Post: Jun 4, 2010 6:08 PM

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 stargene@sbcglobal.net Posts: 19 Registered: 11/11/05
Re: Is there a compact form for n-tuple relativistic additions of
velocities?

Posted: Jun 4, 2010 3:47 AM

Hi, and several googols of thanks for your help. When I tried your

vsum(n copies of x) = 1-2/(2*AT(x))^n

it did not work for me, probably due to a misunderstanding on my
part. But your

vsum(n copies of x) = T(n*AT(x))

worked perfectly on my Haxial calculator, reproducing results
identical to my own tedious calculations, eg: with n = 5, 10 and 50,
using recursive versions of SR's original relation. Using your
relation and pushing n to 10^7 and then 10^9, it also shows that
vsum(n copies of x) converges quickly to

v = .761594155... Co,

that for n = 2, 3, 5 and 10 (with v = Co/2 , Co/3 , Co/5 and Co/10 ),
the resultant velocities <decreased>, ie:

0.8 , 0.777 , 0..7672 and 0.76299 times Co ,

respectively (where Co = unity). This bothered me, especially since
initially it seemed conceivable that the sum might even converge to
0.0 as n --> infinity and v --> 0.0 Co! Nevertheless, the actual con-
vergence is still counter-intuitive, having expected the sum to rise
eventually to Co, as I'm guessing you did too.

Interesting...though what it might mean physically is anybody's guess,
without a ouiji board and Prof. Einstein.

Date Subject Author
5/29/10 stargene@sbcglobal.net
5/31/10 Martin Cohen
6/1/10 stargene@sbcglobal.net
6/2/10 Martin Cohen
6/3/10 Martin Cohen
6/4/10 stargene@sbcglobal.net
6/4/10 Ilya Zakharevich
6/4/10 Martin Cohen