D. Loewenthal et Ea. Robinson, Relativistic combination of any number of collinear velocities and generalization of Einstein's formula, J MATH ANAL, 246(1), 2000, pp. 320-324
By a direct application of the theory of polynomials orthogonal on the unit
circle, the Einstein relativistic combination of any number of velocities
is given in a surprisingly simple closed form. By doing so the Antippa addi
tive formula is simplified. Insight is gained through treatment of the wave
equations describing pressure and particle Velocities for a layered model,
(C) 2000 Academic Press.