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Published in 2017 at "Mathematische Nachrichten"
DOI: 10.1002/mana.201500481
Abstract: In this paper, we study the well-posedness of the degenerate differential equations with fractional derivative Dα(Mu)(t)=Au(t)+f(t),(0≤t≤2π) in Lebesgue–Bochner spaces Lp(T;X), periodic Besov spaces Bp,qs(T;X) and periodic Triebel–Lizorkin spaces Fp,qs(T;X), where A and M are closed…
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Keywords:
degenerate differential;
well posedness;
fractional derivative;
posedness degenerate ... See more keywords
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Published in 2019 at "Mathematische Nachrichten"
DOI: 10.1002/mana.201700420
Abstract: In this paper, we prove the results on existence and uniqueness of the maximal solutions for measure differential equations, considering more general conditions on functions f and g by using the correspondence between the solutions…
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Keywords:
time scales;
solutions measure;
differential equations;
dynamic equations ... See more keywords
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Published in 2021 at "Mathematische Nachrichten"
DOI: 10.1002/mana.201900138
Abstract: We study some classical uniqueness and existence results, such as Peano's or Osgood's uniqueness criteria, in the context of Stieltjes differential equations. This type of equation is based on derivatives with respect to monotone functions,…
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Keywords:
existence uniqueness;
notes existence;
uniqueness solutions;
solutions stieltjes ... See more keywords
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Published in 2017 at "Mathematical Methods in The Applied Sciences"
DOI: 10.1002/mma.4106
Abstract: In this paper, we consider a class of nonlinear fractional differential equations on the infinite interval D0+αu(t)+ft,u(t),D0+α−1u(t)=0,t∈(0,+∞), with the integral boundary conditions u(0)=0,D0+α−1u(∞)=∫0τg1(s)u(s)ds+a,D0+α−2u(0)=∫0τg2(s)u(s)ds+b. By using Krasnoselskii fixed point theorem, the existence results of positive solutions…
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Keywords:
infinite interval;
positive solutions;
integral boundary;
fractional differential ... See more keywords
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Published in 2017 at "Mathematical Methods in The Applied Sciences"
DOI: 10.1002/mma.4335
Abstract: In this paper, we prove the existence and uniqueness of a solution for a class of backward stochastic differential equations driven by G-Brownian motion with subdifferential operator by means of the Moreau–Yosida approximation method. Moreover,…
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Keywords:
stochastic differential;
backward stochastic;
brownian motion;
equations driven ... See more keywords
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Published in 2017 at "Mathematical Methods in The Applied Sciences"
DOI: 10.1002/mma.4571
Abstract: The nonlinear versions of Sturm-Picone comparison theorem as well as Leighton's variational lemma and Leighton's theorem for regular and singular nonlinear impulsive differential equations with discontinuous solutions having fixed moments of impulse actions are established.…
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Keywords:
sturm picone;
nonlinear impulsive;
impulsive differential;
differential equations ... See more keywords
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Published in 2018 at "Mathematical Methods in The Applied Sciences"
DOI: 10.1002/mma.4617
Abstract: R. Almeida was supported by Portuguese funds through the CIDMA-Center for Research and Development in Mathematics and Applications, and the Portuguese Foundation for Science and Technology (FCT-Fundacao para a Ciencia e a Tecnologia), within project…
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Keywords:
respect kernel;
equations caputo;
caputo derivative;
fractional differential ... See more keywords
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Published in 2018 at "Mathematical Methods in The Applied Sciences"
DOI: 10.1002/mma.5107
Abstract: Abstract]We consider a two time scale nonlinear system of ordinary differential equations. The small parameter of the system is the ratio ε of the time scales. We search for an approximation involving only the slow…
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Keywords:
ordinary differential;
order;
order approximation;
time ... See more keywords
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Published in 2019 at "Mathematical Methods in the Applied Sciences"
DOI: 10.1002/mma.5619
Abstract: We study the existence and uniqueness of positive solutions of fractional differential equations with change of sign D0+α(u′′(t))=h(t)f(u(t)),0
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Keywords:
change sign;
solutions fractional;
positive solutions;
equations change ... See more keywords
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Published in 2020 at "Mathematical Methods in the Applied Sciences"
DOI: 10.1002/mma.6242
Abstract: In this paper, a solution to initial value problems for fractional‐order linear commensurate multi‐term differential equations with Caputo derivatives is presented. The solution is obtained in the form of a finite sum of the Mittag‐Leffler–type…
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Keywords:
numerical analytical;
fractional order;
solution;
multi term ... See more keywords
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Published in 2020 at "Mathematical Methods in the Applied Sciences"
DOI: 10.1002/mma.6721
Abstract: We prove the existence of solutions for some semilinear elliptic equations in the appropriate H4 spaces using the fixed‐point technique where the elliptic equation contains fourth‐order differential operators with and without Fredholm property, generalizing the…
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Keywords:
solutions non;
integro differential;
non fredholm;
fredholm integro ... See more keywords