(26)
| dp | + p cot θ = | h3 | , | d·p sin θ | = | h3 sin θ | ; |
| dθ | A | dθ | A |
(27)
| d2h3 | + | dh3 | cot θ = | CMx2 | h3, |
| dθ2 | dθ | A (Mx2 + C) |
(28)
a differential equation of a hypergeometric series, of the form of Legendre’s zonal harmonic of fractional order n, given by
n (n + 1) = CMx2 / A (Mx2 + C).
(29)
For a sharp point, x = 0, ρ = 0, and the previous equations are obtained of a spinning top.
The elimination of X and Z between (18) (20) (22), expressed symbolically as