SVD_And_AddEqSysSurResol
                                       |
                               aSys.GSSR_UseEqMatIndexee ?
                                 1                      0
                               /                          \
               GSSR_EqMatIndexee                       GSSR_AddNewEquation_Indexe
                  /             \
              cFormQuadCreuse     L2SysSurResol
               /           
     Modifie les poids;
     mMat->EqMatIndexee
   /                   \
cElMatCreuseStrFixe   cElMatCreuseGen
      |                            |
AddLineInd                     AddElem