  We present the first complete calculation of the Jarlskog invariant, a
working measure of the strength of CP violation in the flavor oscillations of
three light neutrino species, with the help of a full Euler-like block
parametrization of the flavor structure in the canonical seesaw mechanism. We
find that this invariant depends on 240 linear combinations of the 6 original
phase parameters that are responsible for CP violation in the decays of three
heavy Majorana neutrinos in 27 linear combinations as a whole, and thus
provides the first model-independent connection between the microscopic and
macroscopic matter-antimatter asymmetries.
