The class of evolutionary ferrodynamic equations
Yu. P. Virchenko, A. V. Subbotin · Mathematical Methods in the Applied Sciences · 2020
The class of evolutionary equations for axial vector fields on is described. All operators of the class are invariant with respect to space translations in , relative to time translations, and they are transformed by covariant way relative to rotations of . The class of second‐order differential operators is studied such that the corresponding evolution equations have the divergent type and each of them preserves the solenoidal property and the unimodality of the field. The explicit form of such operators is found.