Classes of Bianchi equations of third orderOn the basis of determining
equations written out in terms of Laplace invariants, some classes
Variational Symmetries of Euler and Non-Euler FunctionalsWe develop a unified approach to the investigation of invariant properties of
Euler and non-
Euler Invariance of functionals and related Euler-Lagrange equationsInvariance of functionals and related
Euler-Lagrange
equations On a new type of solving procedure for Euler–Poisson equations (rigid body rotation over the fixed point) for
Euler–Poisson
equations (rigid body rotation over the fixed point) is suggested in the current research
General form of the Euler-Poisson-Darboux equation and application of the transmutation method problem for a general form of the
Euler-Poisson-Darboux
equation with Bessel operators via generalized