Conservation of Momentum in Relativity

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I had gotten into this discussion in several places and didn't want to do the math out. But I've decided that it's time to stop being lazy. I just completed deriving the conservation relations for angular momentum and linear momentum for conservative systems.

I put it here

In that page three relations are derived. For a conservative system

(1) The total angular momentum is conserved

(2) The total linear momentum is conserved

(3) The "center of mass/energy vector" R is related to P, the total momentum of a conservative system, by P = M(dR/dt) = MV where M = "Total (relativistic) mass = "total energy"/c^2

Also "center of mass vector" = "center of energy vector"


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