  The analytic physics, when it is development from aprioristic form,
constructs all the laws from the Hamilton principle, also called action
principle. According to this principle all systems are characterized by a
magnitude called action which variation is equal to zero for the real evolution
of the systems. At first, do not exist restrictions for the mathematical form
of the action function, nonetheless, as in the a posteriori developer of the
analytic physics, the traditional equations of the physics lead up to a scalar
action, it is always sure that the action may be a scalar function. In this
article we propose the existence of a tensorial function like origin of the
traditional scalar action. First because it permits, without other argumens, to
justify the own action principle and second because it permits connect the
complementary principle of the Quantum physics with the analytic expressions of
the nonquantum physics, including the General Relativity. We call tensorial
action to this original function and their components are connecting, directly,
with the tensorial (spinorial) componets of the wave function of the particles
with spin higher than zero. For this reason we can understand why in the
nonquantum physics only has significance a scalar action.
