Techniques complexes d'étude d'E.D.O.
Techniques of the differential subordination for domains bounded by conic sections.
Test for disconjugacy of a differential inclusion of neutral type.
Testing the method of multiple scales and the averaging principle for model parameter estimation of quasiperiodic two time-scale models
Some dynamical systems are characterized by more than one time-scale, e.g. two well separated time-scales are typical for quasiperiodic systems. The aim of this paper is to show how singular perturbation methods based on the slow-fast decomposition can serve for an enhanced parameter estimation when the slowly changing features are rigorously treated. Although the ultimate goal is to reduce the standard error for the estimated parameters, here we test two methods for numerical approximations of...
Tests for disconjugacy and strict disconjugacy of linear differential equations with delays
The analysis of contour integrals.
The analytic Carathéodory conjecture.
The application of a class of one-step methods to solve the initial value problem
The Application of Rosenbrock-Wanner Type Methods with Stepsize Control in Differential-Algebraic Equations.
The Approximation of Solutions to Linear Homogeneous Differential Equations by Rational Functions.
The asymptotic properties of solutions of differential system of the form , in some neighbourhood of a singular point
The asymptotic solution of higher-order differential equations with small final coefficient
The bang-bang principle for a class of uncertain evolution linear differential [equations] in Hilbert spaces.
This paper deals with the problem of time-varying differential systems when unmodeled dynamics is present. The questions related to when unmodeled dynamics (in fact when parametrical and order errors) does not affect for problems like controllability and related ones with respect to the foreseen results for a correct modelling are investigated for a wide class of typical situations. The presented results seem to be of interest in Physics when modelling uncertainties are present. Only the linear...
The basic properties of phase matrices of linear differential systems
The behavior of solutions of nonlinear differential equations in Hilbert space. I.
The best argument for the parametric continuation of solutions of differential-algebraic equations.
The boundary curves of three classes of the second order nonlinear ordinary differential equations
The boundary value problems for ordinary non-linear differential and difference equations of the fourth order
The Cauchy problem for semilinear weakly hyperbolic equations in Hilbert spaces
The Cauchy problem of the one dimensional Schrödinger equation with non-local potentials.