On differential equations in normal form.
On global transformations of functional-differential equations of the first order
The paper describes the general form of functional-differential equations of the first order with delays which allows nontrivial global transformations consisting of a change of the independent variable and of a nonvanishing factor. A functional equation for is solved on and a method of proof by J. Aczél is applied.
On global transformations of ordinary differential equations of the second order
The paper describes the general form of an ordinary differential equation of the second order which allows a nontrivial global transformation consisting of the change of the independent variable and of a nonvanishing factor. A result given by J. Aczél is generalized. A functional equation of the form is solved on for ,
On Halphen and Laguerre-Forsyth canonical forms of linear differential equations
On Lyapunov transformations of linear systems of implicit differential equations
On perturbed iterative linear differential equations of order .
On phases of accompanying spaces to a linear two-dimensional space of functions with a continuous first derivative
On some properties of functions relative to the classes of certain factor spaces
On Sumudu transform and system of differential equations.
On the Darboux transformation. I.
On the dispersion structure of the differential equation y"=q(t)y having in the generalized Floquet theory the same characteristic multipliers
On the intersection of the set of solutions of two Kummer's differential equations
On the linearization of second-order differential and difference equations.
On the n-th order iterative ordinary linear differential equations.
On the position of nodes of associated equations to the differential equation
On the reduction method versus the stability of ordinary linear differential equations with unknown coefficients.
On the reduction of the Poincaré rank of singular systems of ordinary differential equations.
On the transformation theory of ordinary second-order linear symmetric differential expressions
On transformations of bundles of solutions of a fourth order iterated linear differential equation
On transformations of differential equations and systems with deviating argument