Symmetry Reduction of Some Classes of the First-Order Differential Equations in the Space $M(1,3) \times R(u)$
Abstract:
The symmetry reduction for some classes of the first-order differential
equations (in the space $M(1,3) \times R(u)$) invariant under splitting
subgroups of the Poincare group P(1,4) to classes of differential
equations with fewer independent variables is made.