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. ]]>