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Zbl 1132.26314
Kilbas, A.A.; Titioura, A.A.
Nonlinear differential equations with Marchaud-Hadamard-type fractional derivative in the weighted space of summable functions.
(English)
[J] Math. Model. Anal. 12, No. 3, 343-356 (2007). ISSN 1392-6292; ISSN 1648-3510/e

Summary: The paper is devoted to the study of a Cauchy-type problem for the nonlinear differential equation of fractional order $0<\alpha<1$, \aligned &( D^\alpha_{0+,\mu}y)(x)=f(x,y(x)), \\ &(x^\mu\cal J^{1-\alpha}_{0+,\mu}y)(0+)=b,\quad b\in\Bbb R,\endaligned containing the Marchaud-Hadamard-type fractional derivative $(D^\alpha_{0+,\mu}y)(x)$, on the half-axis $\Bbb R^+=(0,+\infty)$ in the space $X^{p,\alpha}_{c,0}(\Bbb R_+)$ defined for $\alpha>0$ by $$X^{p,\alpha}_{c,0}(\Bbb R_+)=\{y\in X^p_c(\Bbb R_+): D^\alpha_{0+,\mu}y\in X^p_{c,0}(\Bbb R_+)\}.$$ Here $X^p_{c,0}(\Bbb R_+)$ is the subspace of $X^p_c(\Bbb R_+)$ of functions $g$ with compact support on infinity: $g(x)\equiv 0$ for large enough $x>R$. The equivalence of this problem and a nonlinear Volterra integral equation is established. The existence and uniqueness of the solution $y(x)$ of the above Cauchy-type problem is proved by using the Banach fixed point theorem. The solution in closed form of the above problem for the linear differential equation with $\{f(x,y(x))=\lambda y(x)+f(x)\}$ is constructed. The corresponding assertions for the differential equations with the Marchaud-Hadamard fractional derivative $(D_{0+}^\alpha y)(x)$ are presented. Examples are given.
MSC 2000:
*26A33 Fractional derivatives and integrals (real functions)
34K30 Functional-differential equations in abstract spaces
34A12 Initial value problems for ODE
45D05 Volterra integral equations
47N20 Appl. of operator theory to differential and integral equations

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