Buscar
Mostrando ítems 11-20 de 843
Asymptotics for second order delayed differential equations
(Universidad Catolica del Norte, 2007)
In this work we present a way to find asymptotic formulas for some solutions of second order linear differential equations with a retarded functional perturbation.
Analysis of third order linear analytic differential equations with a regular singularity: bessel and other classical equations
(International Press, Inc.PE, 2021-10-06)
We study third order linear differential equations with analytic coefficients under the viewpoint of explicitly constructing solutions and studying their convergence. We consider both homogeneous and non-homogeneous cases. ...
Center boundaries for planar piecewise-smooth differential equations with two zones
(2017-01-01)
This paper is concerned with 1-parameter families of periodic solutions of piecewise smooth planar vector fields, when they behave like a center of smooth vector fields. We are interested in finding a separation boundary ...
Full modeling of the mooring non-linearity in a two-dimensional floating structure
(Pergamon-Elsevier Science Ltd, 2006-01-05)
The dynamic behavior of a two-dimensional model of a small floating structure anchored by chains is analyzed. The structure is first modeled as a two-degrees-of-freedom oscillator with a strongly non-linear stiffness and ...
Resoluções de equações diferenciais ordinárias por séries de potências
(Universidade Tecnológica Federal do ParanáCuritibaBrasilLicenciatura em MatemáticaUTFPR, 2017-06-30)
In this work I study solutions of Second Order Linear Diferential Equations with non-constant coefficients. In order to solve these kinds of problems I use power series methods, in particular the Sucessive Differentiations ...
Existência e regularidade de soluções fundamentais para operadores diferenciais lineares de coeficientes constantes
(Universidade Federal de Santa MariaBrasilMatemáticaUFSMPrograma de Pós-Graduação em MatemáticaCentro de Ciências Naturais e Exatas, 2020-03-19)
The main objective of this dissertation is to present a theorem that guarantees the existence
and regularity of fundamental solutions for linear differential operators with constant
coefficients. We also present some of ...
Detecção de bordas em imagens digitais através de um processo de difusão anisotrópica não linear
(2006-12-01)
The edges detection model by a non-linear anisotropic diffusion, consists in a mathematical model of smoothing based in Partial Differential Equation (PDE), alternative to the conventional low-pass filters. The smoothing ...
Detecção de bordas em imagens digitais através de um processo de difusão anisotrópica não linear
(2006-12-01)
The edges detection model by a non-linear anisotropic diffusion, consists in a mathematical model of smoothing based in Partial Differential Equation (PDE), alternative to the conventional low-pass filters. The smoothing ...
Diagonalizability of nonautonomous linear systems with bounded continuous coefficients
(Elsevier, 2013)
A linear ODE system with bounded continuous coefficients is studied. Provided that the
diagonal terms are ‘‘separated’’ and the off-diagonal terms satisfy a smallness threshold,
we present some sufficient conditions for ...