Examples for real trends ============================= For modes_meca modes (real eigenmodes) resulting from a resolution of a generalized problem with eigenvalues :math:`(K-\lambda M)x=0`: * normalizing an eigenvector :math:`x` to unit generalized stiffness is equivalent to :math:`x` satisfying :math:`{x}^{T}Kx=1` Normalization with duplication of the conceptmode_meca: .. code-block:: text mo_2 = NORM_MODE (MODE = mo_1, NORME = 'RIGI_GENE' ); * normalizing an eigenvector :math:`x` to the generalized unit mass is equivalent to :math:`x` satisfying :math:`{x}^{T}Mx=1` Normalization to the generalized unit mass, with the overriding of the mode_meca concept: .. code-block:: text mo = NORM_MODE (reuse = mo, MODE = me, NORME = 'MASS_GENE' );