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An Indirect Variational Formulation of a Third-order Ordinary Differential Equation and Birkhoff’s Equations-order ordinary differential equations, theindirect representability (in a generalized sense) of theconsidered
On the structure of an operator equation with the first time derivative, admitting an indirect variational formulation with the first time derivative to admit an indirect variational formulation is defined.
ON INDIRECT VARIATIONAL FORMULATION OF AN OPERATOR EQUATION WITH THE FIRST TIME DERIVATIVE to admit an indirect representation in the form of Euler-Lagrange equation are obtained.
On indirect variational formulations for operator equationsA scheme for the construction of indirect variational formulations for a wide class of equations
On indirect variational formulation of a fifth-order partial differential equationIn this paper, a necessary and sufficient condition of the indirect representability of a fifth
On non-classical Hamilton equationsdirect and indirect variational formulations
On the existence of a variational multiplier for a differential operator with partial derivativesThe problem of the existence of an indirect variational formulation of a differential equation
Construction of a variational multiplier for a system of ordinary differential equationsIn the paper, a problem of the existence of a matrix variational multiplier for a system
On indirect representability of an operator equation with the fourth time derivative in the form of Hamilton-Ostrogradskii equationsThe problem of indirect representability of an operator equation with the fourth time derivative
Variational approach to the construction of discrete mathematical model of the pendulum motion with vibrating suspension with frictionThe main purpose of this work is, first, a construction of the indirect Hamilton's variational
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