On Halphen and Laguerre-Forsyth canonical forms of linear differential equations
On index theorems for linear ordinary differential operators
We introduce and study the sheaf of Deligne to describe singular points of a linear differential operator and we develop a technique based on homological algebra to prove index theorems for .As particular cases, we obtain index theorems for acting in spaces of multisummable series and a new proof of the index theorem of Malgrange in the space of convergent power series and of the index theorems of Ramis in the spaces of Gevrey series.We compute the values of these indices in terms of the formal...
On linear differential equations involving a para-Grassmann variable.
On linear singular functional-differential equations in a functional space.
On Lyapunov stability of linear systems of generalized ordinary differential equations.
On Lyapunov transformations of linear systems of implicit differential equations
On minimizing the sum of squares of norms of differential operators under constraints
On monotone solutions of the fourth order ordinary differential equations
On th order differential equations over Hardy fields
On ordinary linear -adic differential equations with algebraic function coefficients
On oscillation, continuation, and asymptotic expansions of solutions of linear differential equations
On oscillation criteria for self-adjoint linear differential equation of the fourth order
On oscillation criteria of fourth order linear differential equations
The paper deals with oscillation criteria of fourth order linear differential equations with quasi-derivatives.
On oscillatory solutions of fourth order ordinary differential equations
The paper deals with the oscillation of a differential equation as well as with the structure of its fundamental system of solutions.
On oscillatory solutions of third-order linear differential equations
On perturbed iterative linear differential equations of order .
On projective equivalence of univariate polynomial subspaces.
On rectifiable oscillation of Euler type second order linear differential equations.
On reducibility of linear quasiperiodic systems with bounded solutions.
On relations among dispersions of an oscillatory differential equation