d
[Sigma]m(x"[delta]x + y"[delta]y + z"[delta]z) = -- [Sigma]m(x`[delta]x + y`[delta]y + z`[delta]z)
dt
- [Sigma]m(x`[delta]x` + y`[delta]y` + z`[delta]z`)
d
= --(p1[delta]q1 + p2[delta]q2 + ...) - [delta][Tau], (4)
dt
by Sec. 1 (14). The last member may be written
p`1[delta]q1 + p1[delta]q`1 + p`2[delta]q2 + p2[delta]q`2 + ...
dP[Tau] dP[Tau] dP[Tau] dP[Tau]
- ------- [delta]q`1 - ------- [delta]q1 - ------- [delta]q`2 - ------- [delta]q2 - ... (5)
dPq`1 dPq1 dPq`2 dPq2