Solvability for Boundary Value Problems of Nonlinear Fractional Functional Differential Systems

2021 ◽  
Vol 10 (04) ◽  
pp. 1039-1052
Author(s):  
欢 全
Author(s):  
Vladimir P. Maksimov

For a wide class of linear functional differential systems with Volterra operators, a constructive technique is proposed to obtain estimates of linear functionals values over solutions in conditions of uncertainty of external perturbations. It can be applied to solutions of boundary value problems with arbitrary number of boundary conditions as well as to description of attainability sets in control problems with respect to given on-target functionals. External perturbations are constrained by a given linear inequalities system on the main time segment. The technique is based on the results of general theory of functional differential equations about the solvability of boundary value problems with general linear boundary conditions and the representation of solutions. The problem under consideration is reduced to the generalized moment problem. Therewith the results on the properties of the Cauchy matrix to systems with aftereffect are of essential importance. The general form of functionals allows one to cover many cases being topical in applications such as multipoint, integral ones, as well as hybrids of those.


2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Jingfeng Wang ◽  
Chuanzhi Bai

In this paper, by using the lower and upper solution method and the monotone iterative technique, we investigate the existence of solutions to antiperiodic boundary value problems for impulsive fractional functional equations via a recent novel concept of conformable fractional derivative. An example is given to illustrate our theoretical results.


2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Huan Quan ◽  
Xiping Liu ◽  
Mei Jia

AbstractIn this paper, we investigate a class of nonlocal boundary value problems of nonlinear fractional functional differential coupled systems with state dependent delays. The method of upper and lower solutions is established and some new results for the multiplicity of solutions of the boundary value problem are obtained. An example is also presented to illustrate our main results.


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