On a “Liapunov like” function for an equation with a complex-valued function
On asymptotic integrations of
On asymptotic properties of oscillatory solutions of the system of differential equations of fourth order
On certain asymptotic properties of the solutions of the equation with a complex-valued function
On combined asymptotic expansions in singular perturbations.
On focal points and limit behavior of solutions 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 -solutions of th order nonlinear differential equation
On matched asymptotic analysis for laminar channel flow with a turning point.
On Oscillation and Nonoscillation Behaviour of Bounded Solutions of N-th Order Delay Differential Equations.
On oscillation, continuation, and asymptotic expansions of solutions of linear differential equations
On Slowly Varying Solutions Of The Linear Second Order Differential Equation
On some properties of the solutions of the third order nonlinear differential equations with delay
On squares of Hermite polynomials.
On strongly asymptotically developable functions and the Borel-Ritt theorem
We show that the holomorphic functions on polysectors whose derivatives remain bounded on proper subpolysectors are precisely those strongly asymptotically developable in the sense of Majima. This fact allows us to solve two Borel-Ritt type interpolation problems from a functional-analytic viewpoint.
On the asymptotic behavior of perturbed linear systems
On the asymptotic behavior of solutions of nonlinear ordinary differential equations
On the asymptotic behaviour of solutions of certain ordinary differential equations
On the asymptotic behaviour of the equation with a complex-valued function
On the asymptotic classes of solutions of a superlinear differential equation