From: mirifici on
At some point of the physicsforums' thread:
http://www.physicsforums.com/showthread.php?t=403024

I posed some thoughts about what I call the "Center of Mass" of all
rational numbers = 3/2,
and asked for some previous papers or books relating specifically this
subject.

Arithmetic mean of all rational numbers = 3/2
Harmonic Mean of all rational numbers = 1/ (arithmetic mean) = 2/3
Geometric Mean of all rational numbers = 1

I would really appreciate if someone could bring me any references on
previous works
on this subject.
Many thanks in advance for your help.
Regards,
Domingo G.
http://domingogomez.web.officelive.com