Browsing EAMOArtigos by Title
Now showing items 143162 of 230

On a discontinuous beamtype equation with deviating argument in the curvature
(Springer International Publishing, 20161012) 
On a new class of antiperiodic fractional boundary value problems
(Hindawi, 2013)This paper investigates a new class of antiperiodic boundary value problems of higher order fractional differential equations. Some existence and uniqueness results are obtained by applying some standard fixed point ... 
On estimating the perimeter using the alphashape
(Institut Henri Poincaré, 2017)We consider the problem of estimating the perimeter of a smooth domain in the plane based on a sample from the uniform distribution over the domain. We study the performance of the estimator defined as the perimeter of the ... 
On Exact Controllability of FirstOrder Impulsive Differential Equations
(SpringerOpen, 2010)Many dynamical systems have an impulsive dynamical behavior due to abrupt changes at certain instants during the evolution process. The mathematical description of these phenomena leads to impulsive differential equations. ... 
On first and second order linear Stieltjes differential equations
(Elsevier, 2022)This work deals with the obtaining of solutions of first and second order Stieltjes differential equations. We define the notion of Stieltjes derivative on the whole domain of the functions involved, provide a notion of ... 
On fractional derivatives and primitives of periodic functions
(Hindawi, 2014)We prove that the fractional derivative or the fractional primitive of a periodic function cannot be a 𝑇periodic function, for any period 𝑇, with the exception of the zero function 
On fractional Langevin equation involving two fractional orders in different intervals
(Vilnius University Press, 2019)In this paper, we study a nonlinear Langevin equation involving two fractional orders α ∈ (0; 1] and β ∈ (1; 2] with initial conditions. By means of an interesting fixed point theorem, we establish sufficient conditions ... 
On fractional order dengue epidemic model
(Hindawi, 2014)This paper deals with the fractional order dengue epidemic model. The stability of diseasefree and positive fixed points is studied. AdamsBashforthMoulton algorithm has been used to solve and simulate the system of ... 
On fractional orthonormal polynomials of a discrete variable
(Hindawi, 2015)A fractional analogue of classical Gram or discrete Chebyshev polynomials is introduced. Basic properties as well as their relation with the fractional analogue of Legendre polynomials are presented. 
On Homoclinic Solutions of a Semilinear Laplacian Difference Equation with Periodic Coefficients
(SpringerOpen, 2010)We study the existence of homoclinic solutions for semilinear Laplacian difference equations with periodic coefficients. The proof of the main result is based on BrezisNirenberg's Mountain Pass Theorem. Several examples ... 
On impulsive nonlocal integroinitial value problems involving multiorder Caputotype generalized fractional derivatives and generalized fractional integrals
(Springer, 2019)In this paper, we present sufficient criteria ensuring the existence and uniqueness of solutions for nonlinear impulsive multiorder Caputotype generalized fractional differential equations supplemented with nonlocal ... 
On multipoint resonant problems on the halfline
(Springer, 2019)In this work we obtain sufficient conditions for the existence of bounded solutions of a resonant multipoint secondorder boundary value problem, with a fully differential equation. The noninvertibility of the linear ... 
On Some Fixed Point Results for 𝐻+Type Contraction Mappings in Metric Spaces
(Hindawi, 2015)We prove some fixed point theorems for H+type multivalued contractive mappings in the setting of Banach spaces and metric spaces. The results provided allow recovering different wellknown results 
On some nonlinear boundary value problems related to a BlackScholes model with transaction costs
(Springer, 2015)We deal with some generalizations on a BlackScholes model arising in financial mathematics. As a novelty in this paper, we consider a variable volatility and abstract functional boundary conditions, which allow us to treat ... 
On the Existence of Eigenvalues of a Boundary Value Problem with Transmitting Condition of the Integral Form for a ParabolicHyperbolic Equation
(MDPI, 2020)In the paper, we investigate a local boundary value problem with transmitting condition of the integral form for mixed parabolichyperbolic equation with noncharacteristic line of type changing. Theorem on strong solvability ... 
On the gammalogistic map and applications to a delayed neoclassical model of economic growth
(Springer Nature, 201904)In this work, we study the stability properties of a delay differential neoclassical model of economic growth, based on the original model proposed by Solow (Q J Econ 70:65–94, 1956). We consider a logistictype production ... 
On the linear fuzzy model associated with Caputo–Fabrizio operator
(SpringerOpen, 20180605)In this paper, we introduce the fuzzy Caputo–Fabrizio operator under generalized Hukuhara differentiability concept. In this setting, we study the linear fuzzy fractional initial value problems and present the general ... 
On the second order properties of the multidimensional periodogram for regularly spaced data
(Society for Industrial and Applied Mathematics (SIAM), 2009)Recently there is growing interest in improving the level of knowledge of spatial and spatiotemporal processes using spectral techniques. The properties of the estimator of the spectral density, the periodogram, have been ... 
On the smoothness of solutions of the third order nonlinear differential equation
(Springer, 2017)In this work we study the following third order differential equation: Ly := y + (q(x, y) + λ)y = f ∈ L2(R), R = (–∞,∞),λ > 0, where q(x, y) ≥ 1 is a continuous function in all its variables. We will deal with the following ... 
On the stability properties of a delay differential neoclassical model of economic growth
(University of Szeged, 20180626)The main aim of this paper is to establish sharp global stability conditions for the positive equilibrium of a wellknown model of economic growth when a delay is considered in the production function. In order to deal ...