We calculate it now in the hope that it might be of help to the readers of the accompanying paper on SU(3)xSU(13) where the same formalism is used to discuss some physically interesting problems.

We believe that the geometrical approach presented in these papers will help clarifying the relations and the properties of the fundamental interactions.

It might be used for example to understand the geometrical basis of some recent attempts to compute Cabibbo's angle.]]>
of an n-component field (or order parameter} for n&4. Simple proofs of known results are given.

Among new results, we shou that when it exists the stable fixed point is unique; we give some precision

on its symmetry and on its attractor basin.]]>
Finally counter examples, with v arbitrarily large, are given to the Dzyaloshinskii conjecture that there exist no stable fixed points when the Landau potential depends on more than V = 3 parameters. ]]>